The Universe is vast. Nothing is more curious than the self-satisfied dogmatism with which mankind at each period of its history cherishes the delusion of the finality of existing modes of knowledge. Skeptics and believers are alike. At this moment scientists and skeptics are the leading dogmatists. Advance in detail is admitted; fundamental novelty is barred. This dogmatic common sense is the death of philosophic adventure.

The consequences of a plethora of half-digested theoretical knowledge are deplorable.

Religion is what a person does in his solitariness.

The ideas of Freud were popularized by people who only imperfectly understood them, who were incapable of the great effort required to grasp them in their relationship to larger truths, and who therefore assigned to them a prominence out of all proportion to their true importance.

It is in literature that the concrete outlook of humanity receives its expression.

No religion can be considered in abstraction from its followers, or even from its various types of followers.

There are no whole truths: all truths are half-truths. It is trying to treat them as whole truths that plays to the devil.