Abstract
The elaboration of these principles has rested on the efforts of many thinkers. In presenting the scientific aspect, few have been as lucid and as aware of fundamental issues as the British physicist, J. D. Bernal. Aside from the Soviet tradition, which derives so largely from Lenin's work of critical re-statement, Materialism and Empirio-criticism, little has been done to carry out what has been mainly a program, a series of brilliant aperçus, and a guide. In Bernal's recent writings, the attempt is finally being made to apply these principles and practice their program. His political activities, his philosophical commentary, and his research have blended in his Marxist vision of a scientific way of life.