ABSTRACT
Sigmund Koch devoted a professional career of more than a half a century to exploring the prospects and conditions for a significant psychology. His analyses and assessments were frequently disturbing, both to other psychologists and to himself. But although he was a critic-often a vigorous one-of much of the psychological enterprise, his message was ultimately hopeful. He urged a psychology that was at once more ambitious and more modest-more ambitious in its tackling of problems of genuine human significance, more modest in its expectations of the increments in genuine knowledge that could be anticipated. He hoped and believed that the result would be a more meaningful psychology, one that could make an authentic contribution to human knowledge.1
