Inductive reason, which alone makes man master of his environment, is an achievement and when once born it must be reinforced by inhibiting the growth of other modes of knowledge.

The thought of a limit to perceptual space and time staggers the mind.

I tell you the sign of a believer; When Death comes, there is a smile on his lips

Indeed, in view of its function, religion stands in greater need of a rational foundation of its ultimate principles than even the dogmas of science.

The spirit of philosophy is one of free inquiry. It suspects all authority. Its function is to trace the uncritical assumptions of human thought to their hiding places, and in this pursuit it may finally end in denial or a frank admission of the incapacity of pure reason to reach the ultimate reality.

The soul is neither inside nor outside the body; neither proximate to nor separate from it.

From your past emerges the present, and from the present is born your future.