Exhibit 10.7
                                                                    ------------
 
                           Howell Resource Partners
                                 Alfred Kniberg
                                Richard  Sheldon
                                 Paul  McDonald
        Janney Montgomery Scott, Inc. Custodian f/b/o Paul H. McDonald
                                Graeme Caulfield
                                C. David Goldman
                                 Louis Musante
                                  Joyce Baran
                                 John Peterson


                                                              September 15, 1997




                                                          
Aristotle Sub, Inc.              The Aristotle Corporation         The Strouse, Adler Company
78 Olive Street                  78 Olive Street                   78 Olive Street
New Haven, CT 06511              New Haven, CT 06511               New Haven, CT 06511


     Re:  Amendment Agreement
          -------------------

Gentlemen:

     Reference is made to (a) the Pledge and Escrow Agreement dated as of April
11, 1994 (the "Original Pledge Agreement") by and among David Howell and Alfred
Kniberg (together, the "Pledgees") in their capacity as collateral agent for
Howell Resource Partners, Alfred Kniberg, Joyce Baran, Paul McDonald, Richard
Sheldon, C. David Goldman, Trustee, Louis Musante, John Peterson, Janney
Montgomery Scott, Inc., custodian f/b/o Paul McDonald and Graeme Caulfield (the
Shareholders") and Aristotle Sub, Inc. ("Newco"), as amended by a letter dated
June 27, 1995 from the Pledgees to Newco and The Aristotle Corporation
("Aristotle"), and as further amended by a letter dated October 27, 1995 from
the Waiver Group (as defined in the Original Pledge Agreement) to Newco and
Aristotle (the Original Pledge Agreement, together with such letter amendments,
being hereinafter referred to as the "Pledge Agreement"); (b) the Security
Agreement dated as of April 11, 1994 among The Strouse Adler Company
("Strouse"),  and David Howell and Alfred Kniberg in their capacity as
collateral agent for the Shareholders (the "Security Agreement"); (c) the
several Stock Purchase Warrants Series A (the "Preferred Warrants") issued to
each of the Shareholders; (d) the several Stock Purchase Warrants Series B (the
"Common Warrants") issued to each of the Shareholders; (e) the several Term
Promissory Notes made by each of the Shareholders in favor of Aristotle (each, a
"Note" and collectively, the "Notes"); (f) the Registration Rights Agreement
dated as of April 11, 1994 among Aristotle and the Shareholders (the
"Registration Rights Agreement"); (g) the Pension Escrow Agreement dated as of
April 11, 1994 among Strouse and David Howell and Alfred Kniberg in their
capacity as collateral agent for the Shareholders, and the escrow agent named
therein (the Escrow Agreement"); and (h) the Capital Contribution Agreement
dated as of November 19, 1993 among Aristotle, Newco, Strouse and the
Shareholders (the "Capital 


 
Contribution Agreement"). Capitalized terms used herein and not otherwise
defined herein shall have the meaning assigned to them in the Pledge Agreement,
the Security Agreement, the Preferred Warrants, the Common Warrants, the Notes,
the Registration Rights Agreement, the Escrow Agreement and the Capital
Contribution Agreement, as applicable.

     The undersigned do hereby agree as follows:

     1.  The Pledge Agreement is hereby amended by adding the following sentence
at the end of Section 7 thereof:

         Notwithstanding the foregoing sentence, the Pledgor shall have the
     right to sell, assign, transfer or otherwise dispose of any of, grant an
     option with respect to, or pledge or otherwise encumber or restrict any of
     the Stock or any interest therein if its pays or deposits in the Account
     the amount required to satisfy all of its obligations under the Put Right
     and mandatory redemption obligations under its Certificate of Incorporation
     then in effect with respect to the then outstanding shares of its Series A,
     B and C Preferred Stock, in which event the Pledgees shall return the Stock
     to the Pledgeor together with stock powers executed in blank required for
     the transfer of the Stock to the Pledgor.

     2.  The Pledge Agreement is hereby amended by deleting the last sentence of
Section 10 thereof and substituting the following in its place:

         The funds in the Account shall be available to the Pledgor to be used
     solely to make payments pursuant to Put Rights then being exercised as
     follows: (a) on or after January 1, 1998, $400,000 of the funds in the
     Account shall be returned to the Pledgor, (b) on or after January 1, 1999,
     up to an additional $200,000 of the funds in the Account shall be returned
     to the Pledgor, (c) on or after January 1, 2000, up to an additional
     $100,000 of the funds in the Account shall be returned to the Pledgor, and
     (d) on April 11, 2001, any remaining funds in the Account shall be returned
     to the Pledgor; in each case, unless an Indemnity Notice or Dispute Notice
     is then outstanding with respect to said funds, in which event the funds in
     the Account shall be distributed in accordance with Mutual Instructions or
     an Award.

     3.  The Security Agreement is hereby amended by adding the following
sentence at the end of Section 3(b) thereof:

         Notwithstanding the foregoing sentence, the Debtor shall have the right
     to sell or otherwise dispose of any of the Collateral or any interest
     therein if, in lieu of pledging substitute collateral, Aristotle or Newco
     pays or deposits in the Account (as defined in the Pledge and Escrow
     Agreement dated April 11, 1994 between the Collateral Agent and Sub, as
     amended)the amount required to satisfy all of Newco's obligations under the
     Put Right and mandatory redemption obligations under Newco's Certificate of
     Incorporation then in effect with respect to the then outstanding shares of
     its Series A, B and C Preferred Stock, in which event this Agreement and
     the security interest in the Collateral created hereby shall terminate, and
     the Secured Parties shall promptly execute and deliver

                                       2

 
     to the Debtor such UCC-3 termination statements, certificates and other
     documents or instruments as may be necessary to enable the Debtor to
     terminate the security interest in the Collateral granted hereby.

     4.  Each Shareholder agrees that the number of Stock Units which may be
purchased on exercise of such Shareholder's Preferred Warrants as set forth of
the first page of such Shareholder's Preferred Warrants certificate and in the
definition of "Warrants" in Section 1 thereof shall be amended such that the
number of Stock Units which such Shareholder shall be entitled to purchase shall
be the number set forth opposite such Shareholder's name below:

 
                                                          Number of
     Holder                                              Stock Units   
     ------                                              -----------   
     Howell Resource Partners                                50,000

     Albert  Kniberg                                         13,617
                                                                   
     Richard  Sheldon                                             0
                                                                   
     Paul  McDonald                                           5,702
                                                                   
     J.M. Scott, Inc. Custodian f/b/o                             0
     Paul H. McDonald                                              
                                                                   
     Graeme Caulfield                                         4,616
                                                                   
     C. David Goldman                                         2,420
                                                                   
     Louis Musante                                            2,420
                                                                   
     Joyce Baran                                              1,724
                                                                   
     John Peterson                                                0 

The Amendment in this Paragraph 4 shall be null and void if Newco does not make
the payments on January 1, 1998 to redeem certain shares of Series A, B and C
Series Preferred Stock of Newco held by the Shareholders.

     5.  Each Shareholder agrees that such Shareholder's certificate for
Preferred Warrants is hereby amended by deleting the definition of "Preferred
Stock Exercise Rate" in Section 1 thereof and substituting the following in its
place:

                                       3

 
         "Preferred Stock Exercise Rate" shall mean the number of shares of
     Common Stock of the Company into which each share of Newco Series A, B and
     C Preferred Stock may be exchanged; the initial Preferred Stock Exercise
     Rate shall be 1.6666667, and such initial Preferred Stock Exercise Rate
     shall be subject to the adjustments described herein.

     6.  Each Shareholder agrees that such Shareholder's certificate for
Preferred Warrants is hereby amended by deleting the last sentence of Section
2(a) thereof and substituting the following in its place:

     As used herein, "Exercise Consideration" initially means one share of
     Series A, B or C Preferred Stock of Newco (excluding the Redemption Shares,
     as defined in the Restated Certificate of Incorporation of Newco) for each
     1.6666667 Stock Units (the "initial Preferred Stock Exercise Rate") and
     thereafter means the Preferred Stock Exercise Rate.

     7.  Each Shareholder agrees that such Shareholder's certificate for
Preferred Warrants is hereby amended by deleting the definition of "Exercise
Right Commencement Date" in Section 1 thereof and substituting the following in
its place:

         "Exercise Right Commencement Date" shall mean (i) the earlier of the
     occurrence of an Acceleration Event or (ii) January 1, 1999 with respect to
     exercises as to which Series A or B Preferred Stock is the exercise
     consideration and January 1, 2000 with respect to exercises as to which
     Series C Preferred Stock is the exercise consideration.

     8.        [INTENTIONALLY OMITTED.]



     9.  Each Shareholder listed below surrenders for cancellation the number of
shares of Series A and/or B Preferred Stock to Newco set forth opposite such
Shareholders name below in exchange for a reduction in the principle amount of
such Shareholder's Note in the amount set forth opposite such Shareholder's name
below.



                       
                
                      Series A           Series B                              
                      Preferred Stock    Preferred Stock    Principle        New Principle 
Shareholder           Surrendered        Surrendered        Reduction        Balance of Note
- ------------------    -----------        -----------        ---------        ---------------
                                                                 
Albert Kniberg        0                  5,706              $57,060          $92,119
Paul McDonald         1,957              1,574              $35,310          $57,020
Joyce Baran           O                  763                $ 7,630          $12,338

In addition, each such Shareholder agrees that such Shareholder's Note is hereby
amended such that one-half of the principal amount (as reduced pursuant to the
preceding sentence) of such Note shall be due and payable on January 1, 1999 and
one-half of the principal amount (as

                                       4

 
reduced pursuant to the preceding sentence) of such Note shall be due and
payable on January 1, 2000.

     10.  The Registration Rights Agreement is hereby amended by deleting the
date "April 11, 1996" as it appears in the second line of Section 1.2(a) thereof
and substituting the date "January 1, 1999" in its place.

     11.  The Escrow Agreement is hereby amended by deleting subpart (iv) of
Section 7 thereof and substituting the following in its place:

          (iv)  September 15, 1997.

     12.  Each Shareholder agrees to surrender such Shareholder's certificate
for Preferred Warrants to Aristotle in exchange for a new certificate for
Preferred Warrants incorporating the amendments set forth in Paragraphs 4
through 7 of this letter agreement within ten calendar days of the execution
hereof; provided, however, that such amendments shall be effective
        -----------------                                         
notwithstanding the failure of any Shareholder to surrender such Shareholder's
certificate for Preferred Warrants to Aristotle or the failure of Aristotle to
issue a new certificate for Preferred Warrants in exchange therefore.

     13.  Each Shareholder agrees to surrender such Shareholder's certificate
for Common Warrants to Aristotle in exchange for a new certificate for Common
Warrants incorporating the amendment set forth in Paragraph 8 of this letter
agreement within ten calendar days of the execution hereof; provided, however,
                                                            ----------------- 
that such amendment shall be effective notwithstanding the failure of any
Shareholder to surrender such Shareholder's certificate for Common Warrants to
Aristotle or the failure of Aristotle to issue a new certificate for Common
Warrants in exchange therefore.

     14.  Each Shareholder agrees to surrender such Shareholder's certificates
for Newco Series A, B and C Preferred Stock to Newco so that Newco can reissue
certificates for such shares with appropriate legends reflecting the amendments
to Newco's Restated Certificate of Incorporation approved by Newco's
stockholders pursuant to an Action by Stockholders Without a Meeting dated
September 15, 1997 (the "Restated Certificate of Incorporation") by identifying
the Put Right Commencement Date assigned to each share and designating certain
shares of Series A, B, and C Preferred Stock as the Redemption Shares (as
defined in Newco's Restated Certificate of Incorporation), within ten calendar
days of the execution hereof; provided, however, that such amendments to Newco's
                              -----------------                                 
Restated Certificate of Incorporation shall be effective and binding upon the
Shareholders and Newco notwithstanding the failure of any Shareholder to
surrender such Shareholder's certificates for Series A, B and C Preferred Stock
to Newco or the failure of Newco to issue new certificates in exchange
therefore.

     15.  Each Shareholder agrees to execute and deliver to Aristotle a new Note
in exchange for the cancellation of such Shareholder's original Note, such new
Note to incorporate the amendments set forth in Paragraph 9 of this letter
agreement, within ten calendar days of the execution hereof; provided, however,
                                                             ----------------- 
that such amendments shall be effective notwithstanding

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the failure of any Shareholder to execute and deliver to Aristotle a new Note in
exchange for the cancellation of such Shareholder's original Note.

     16.  Each Shareholder agrees that Aristotle and Newco shall have the right
to restructure such corporations such that the Shareholder's equity interest in
Newco shall become an equity interest in Aristotle and hereby consents to such
restructuring; provided that such restructuring qualifies as a tax free
reorganization under federal income tax rules in which the Shareholders will not
recognize any gain on the disposition at their equity interest in Newco and that
following any such restructuring such Shareholders shall be in the same position
as shareholders of Aristotle with respect to dividends, liquidation preference
and put rights and such other powers, preferences and relative, participating,
optional and other special rights and the qualifications, limitations,
restrictions and other distinguishing characteristics as they were in as holders
of the Series A, B and C Preferred Stock of Newco.  The Shareholders covenant
and agree to execute and deliver such additional agreements and instruments and
take all such further action as shall be necessary or expedient to give effect
to the foregoing.

     17.  For purposes of Section 4.9 of the Capital Contribution Agreement, the
execution of this letter agreement by the undersigned members of the Waiver
Group shall be deemed to be the consent of or waiver from the Waiver Group with
respect to the amendments effected in the Restated Certificate of Incorporation
and the other covenants and agreements of the Shareholders set forth above.

     18.  Aristotle will use its reasonable best efforts to file as
expeditiously as possible with the Securities and Exchange Commission a Form S-3
registration statement covering all shares of Aristotle Common Stock which may
be received by the Shareholders on exercise of Common Warrants or Preferred
Warrants.

     Except as expressly provided herein, none of the other provisions of the
Pledge Agreement, the Security Agreement, the Preferred Warrants, the Common
Warrants, the Notes, the Registration Rights Agreement, the Escrow Agreement or
the Capital Contribution Agreement are amended or waived, and the Pledge
Agreement, the Security Agreement, the Preferred Warrants, the Common Warrants,
the Notes, the Registration Rights Agreement, the Escrow Agreement and the
Capital Contribution Agreement are and remain in full force and effect.

     Please indicate your agreement to the foregoing by executing this letter
agreement in the space provided below.  This letter may be executed in one or
more counterparts and the facsimile of the signature of any party shall
constitute an original signature of such party.  The failure by any one or more
of the Shareholders to execute this letter will not affect the validity or
enforceability of this letter against the other Shareholders who execute this
letter.

                                    Very truly yours,

                                    Howell Resource Partners

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                                     /s/ David Howell
                                    -----------------------------
                                    By: David Howell
                                    Its: General Partner

                                    /s/ Alfred Kniberg
                                    -----------------------------
                                    Alfred Kniberg, individually and as
                                    collateral agent under the Pledge Agreement
                                    and Security Agreement

                                    /s/ Richard Sheldon    
                                    -----------------------------  
                                    Richard Sheldon

                                    /s/ Paul McDonald    
                                    -----------------------------
                                    Paul McDonald

                                    Janney Montgomery Scott, Inc. Custodian
                                    f/b/o Paul McDonald

                                    /s/ Richard T. Avallon
                                    -----------------------------
                                    By: Richard T. Avallon
                                    Its:

                                    /s/ Graeme Caulfield 
                                    -----------------------------
                                    Graeme Caulfield

                                    /s/ C. David Goldman  
                                    -----------------------------
                                    C. David Goldman

                                    /s/ Louis Musante
                                    -----------------------------
                                    Louis Musante

                                    /s/ Joyce Baran
                                    -----------------------------
                                    Joyce Baran

                                    /s/ John Peterson    
                                    -----------------------------
                                    John Peterson

                                    /s/ David Howell
                                    -----------------------------
                                    David Howell, as collateral agent under the
                                    Pledge Agreement, the Security Agreement and
                                    the Escrow Agreement


Acknowledged and Agreed to:

                                       7

 
ARISTOTLE SUB, INC.



By: /s/ John J. Crawford
   -----------------------
     John J. Crawford
     President

THE STROUSE, ADLER COMPANY



By: /s/ Paul McDonald
   -----------------------


THE ARISTOTLE CORPORATION



By: /s/ John J. Crawford
   -----------------------
     John J. Crawford
     President

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