CONTENTS 



PAGE 



Metamorphoses of Scepticism (1941) 7 



The Naturalness of the Spiritual World: 

 A Reappraisement of Henry Drummond 

 (1939) 28 



Science^ Religion and Socialism (1935) 42 



Laudj the Levellers^ and the Virtuosi (1935) 75 



Pure Science and the Idea of the Holy (194O 92 



Thoughts of a Young Scientist on the Testa- 

 ment of an Elder One (John Scott Haldane) (1936) 1 2 1 



Limiting Factors in the History of Science^ 

 observed in the History of Embryology 141 



(Carmalt Lecture at Yale University, 1935) 



The Biological Basis of Sociology (1936) 160 



A Biologist's View of Whitehead' s Philosophy 

 (1941) 178 



Evolution and Thermodynamics (1941) 207 



Integrative Levels; A Revaluation of the Idea 



of Progress (Herbert Spencer Lecture at Oxford 

 University, 1937) 233 



Index 273 



56687 



