A sign is always less than the thing it points to, and a symbol is always more than we can understand at first sight. Therefore we stop at the sign but go on to the goal it indicates; but we remain with the symbol because it promises more than it reveals.

A book of mine is always a matter of fate. There is something unpredictable about the process of writing, and I cannot prescribe for myself any predetermined course.

During my medical education at the University of Basle I found vivisection horrible, barbarous and above all unnecessary

Wholeness is not achieved by cutting off a portion of one’s being, but by integration of the contraries.

The apparently unendurable conflict is proof of the rightness of your life. A life without contradiction is only half a life; or else a life in the Beyond, which is destined only for angels. But God loves human beings more than the angels.

To become acquainted with oneself is a terrible shock.

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.