A philosophy without heart and a faith without intellect are abstractions from the true life of knowledge and faith. The man whom philosophy leaves cold, and the man whom real faith does not illuminate, may be assured that the fault lies in them, not in knowledge and faith. The former is still an alien to philosophy, the latter an alien to faith.

Each of the parts of philosophy is a philosophical whole, a circle rounded and complete in itself. In each of these parts, however, the philosophical Idea is f…

The Philosophy of Nature takes up the material, prepared for it by physics out of experience, at the point to which physics has brought it, and again transform…

The significance of that 'absolute commandment', know thyself - whether we look at it in itself or under the historical circumstances of its first utterance - …