CONTENTS 



LECTURE PAGE 



1. Current Tendencies 3 



II. Logic as the Essence of Philosophy ... 33 



III. On our Knowledge of the External World . 63 



IV. The World of Physics and the World of Sense ioi 

 V. The Theory of Continuity 129 



VI. The Problem of Infinity considered Historically 155 



VII. The Positive Theory of Infinity . . .185 



VIII. On the Notion of Cause, with Applications to 



the Free-will Problem 211 



Index . 243 



9 -j 



IX 



