Exhibit 23.13 CONSENT TO BE NAMED AS A KEY PRACTICE LEADER I hereby consent to be named as a person who will become a key practice leader of Clarant, Inc. (the "Company") in the registration statement on Form S-1 to be filed by the Company with the Securities and Exchange Commission relating to the initial public offering by the Company of shares of common stock, par value $.01, of the Company. Dated: May 24, 1999 /s/ Morris W. Markel -------------------------- Name [print] Morris W. Markel