Born 1632 in Holland of a Jewish family that had been exiled from Spain and Portugal. He early showed great powers as a student, and in 1656 was banned by the Jewish community at Amsterdam because of his views. His chief work, which had a lasting influence upon future generations of thinkers, long after the author's death in 1677, is The Ethics, which has recently appeared in a new edition titled The Road to Inner Freedom, New York, 1957.