CONTENTS 



PAGE 



A Beginning 1 



Light and Heat 1 



Life 2 



Man 2 



Intelligence 3 



Apparent Helplessness 4 



Prolonged Infancy • . 4 



Race for Life 5 



Man's Triumph 5 



Disease 6 



Other Enemies 7 



Man Against Man . • 9 



Fact Versus Theory 10 



Struggle for Existence 12 



Altruism 13 



Man is Complex 15 



Emotion I 6 



Man's Full-rounded Nature 17 



Selfishness 17 



Wealth of Nations 19 



Moral Sentiments 20 



Life's Conditions 21 



So-called Lower Animals 22 



Progress 24 



The Idea of God 25 



Superstition 27 



Race Survtval 30 



Moral Ideas 31 



Sacrifice 32 



Varying Moral Ideas 34 



The General Good 36 



Survival of the Fittest 38 



vii 



