In this section the sources which have been consulted in the writ- 

 ing of my book are hsted. I owe something to most of them and a 

 very great deal to some of them. In addition, the reader will find 

 further references that may be of interest. Wherever possible, the 

 books and periodicals chosen were selected for their accessibility 

 and economy. 



Chapter 1 



Barnett, Lincoln. The Universe and Dr. Einstein (Mentor Books, 

 1952). I was fascinated by this brilliant, readable account of the 

 theoretical structure of the universe. It is very fine science writ- 

 ing, understandable in spite of the difficulty of the subject, and a 

 valid sketch of the philosophical concepts of twentieth-century 

 science. 



Barnett, Lincoln. The World We Live In (Simon & Schuster, 

 1955). The evolutionary story is well told and wonderfully illus- 

 trated in a valuable contribution to the dissemination of knowl- 

 edge that first appeared in a series of Lije magazine articles be- 

 ginning in 1952. 



Bergson, Henri. Creative Evolution, translated by Arthur Mitchell 

 (Holt, 1911). One of the great classics of evolutionary literature. 



Bruno, Giordano. See D. Singer, listed below. 



Darwin, Charles. On the Origin of Species (Modern Library, 

 1936) and Descent of Man (Appleton, 1875). The two nine- 

 teenth-century books that changed the course of human thought. 



DuRANT, Will. The Story of Philosophy (Pocket Books, 1954; 

 first published by Simon & Schuster, 1926). A successful attempt 

 to popularize a difficult subject. It was Durant's desire to human- 

 ize knowledge by centering the story of speculative thought 

 around certain dominant personalities. Unless you are a profes- 

 sional philosopher, you have missed a worthwhile experience by 

 not reading this book. 



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