In this four-volume series, Kreeft delivers, with his characteristic wit and clarity, an introduction to philosophy via the hundred greatest philosophers of all time. examines the big ideas of four major eras―ancient, medieval, modern, and contemporary―and immerses the reader in the “great conversation,” the ongoing dialogue among the great thinkers of history, including the most influential philosopher of all: Socrates, the father of Western philosophy. studies the transformation of philosophy that came about due to an unprecedented figure―Jesus Christ―and considers the philosophers of the great monotheistic religions of Judaism, Christianity, and Islam as they sought to marry the Greek philosophical tradition with divine revelation.