Both Perelman's collaborators, Professors Haarscher and Ingber, shared with me their deep personal insights about origins, birth and phases of the develop- ment of the New Rhetoric. Without their good will, advice and creative com- ments, my personal knowledge would have been narrower. I am grateful to the Chaim Perelman Foundation for their grant which enabled me to cover my expenses of collecting materials, editing and preparing the manuscript. Professor Michel Meyer was very instrumental in the negotiations with the publisher. Mr. Raphael Lipski, treasurer of the Perelman Foundation, spent...