In this stimulating volume, Sir Isaiah Berlin, a Fellow of All Souls College, Oxford, Lucidly and succinctly presents commentaries on, and selections from, the basic writings of the brilliant philosophers Berkeley, Locke, Hume and others-men who believed that science's achievements in the material world could be translated into philosophical terms. The challenging ideas of these great thinkers-and their equally great critics-remain the classical foundation of liberal humanism and rationalism in the West, so unparalleled for their lucidity, courage, hatred of darkness, and love of truth that they are of vital interest to men and women today.