It had become clear to me, in a flash of illumination, that for me the only possible goal was psychiatry. Here alone the two currents of my interest could flow together and in a united stream dig their own bed. Here was the empirical field common to biological and spiritual facts, which I had everywhere sought and nowhere found. Here at last was the place where the collision of nature and spirit became a reality.

I had always been impressed by the fact that there are surprisingly many individuals who never use their minds if they can avoid it, and yet are not stupid, and an equal number who obviously do use their minds but in an amazingly stupid way.

Life is teleology par excellence; it is the intrinsic striving towards a goal, and the living organism is a system of directed aims which seek to fulfill themselves.

The Christian missionary may preach the gospel to the poor naked heathen, but the spiritual heathen who populate Europe have as yet heard nothing of Christianity.

Solitude is for me a fount of healing which makes my life worth living.

What you call knowledge is an attempt to impose something comprehensible on life.

Who has fully realized that history is not contained in thick books but lives in our very blood?