This book is an attempt to introduce the ordinary reader to the effort of the Western mind, sustained for centuries, to grapple with the major problems of human life and destiny. For this purpose, two outstanding figures are selected from each of the major periods of European development and their contribution to thought is set out: connecting links are provided so that the story may make something of a whole. I have endeavoured throughout to avoid technical language as far as the subject permits and to concentrate on essentials. No previous knowledge is assumed, but only interest.