This book describes the influence of Epicurus on Judaism. Judaism is the only national culture which has adopted the name of this Greek philosopher, using it as a term designating Jews who believe in freedom to choose their way of life, without obligation to obey religious precepts. Today, most Jews live as "Apikorsim". The heresy implicit in the denial of the existence of a personal God includes a denial of belief in life after death. Apikorsim believe that the purpose of life and of morality is found in striving for happiness.