Originally published in 1934, this book presents a series of essays on various important figures and ideas in the development of philosophy. The essays cover the following subjects: 'Reason'; 'Comte and Mill'; 'Schopenhauer'; 'Vico's new science of humanity'; and 'Transcendence in Spinoza'. An index of names is also included. This book will be of value to anyone with an interest in the history of philosophy.