Simple things are always the most difficult.

It is in applied psychology, if anywhere, that today we should be modest and grant validity to a number of apparently contradictory opinions; for we are still far from having anything like a thorough knowledge of the human psyche, that most challenging field of scientific enquiry. For the present we have merely more or less plausible opinions that defy reconciliation.

To me dreams are part of nature, which harbors no intention to deceive but expresses something as best it can.

The decisive question for man is: Is he related to something infinite or not? That is the telling question of his life. Only if we know that the thing which truly matters is the infinite can we avoid fixing our interest upon futilities, and upon all kinds of goals which are not of real importance.

The bigger the crowd, the more negligible the individual.

All fanaticism is repressed doubt.

No man can change himself into anything from sheer reason; he can only change into what he potentially is.