In this ambitious and provocative work of philosophy, Paul Carus challenges the growing agnosticism of his time by offering a systematic comparison of the philosophies of Immanuel Kant and Herbert Spencer. Drawing on his years of research and writing on the history of Eastern and Western philosophy, Carus argues that a synthesis of Kant's rationalism and Spencer's empiricism provides a path towards a more comprehensive and satisfying understanding of the nature of reality. This is an essential work for anyone interested in the history of philosophy and the intellectual debates of the late 19th century.

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