Science is not ... a perfect instrument, but it is a superb and invaluable tool that works harm only when taken as an end in itself.

The upheaval of our world and the upheaval of our consciousness are one and the same.

The psyche is a natural phenomenon. All aspects of the psyche, even those which seem pathological or destructive, actually serve the function of furthering our psychological development.

The more one sees of human fate and the more one examines its secret springs of action, the more one is impressed by the strength of unconscious motives and by the limitations of free choice

It seems to be very hard for people to live with riddles or to let them live, although one would think that life is so full of riddles as it is that a few more things we cannot answer would make no difference. But perhaps it is just this that is so unendurable, that there are irrational things in our own psyche which upset the conscious mind in its illusory certainties by confronting it with the riddle of its existence.

The educated man tries to repress the inferior one in himself, without realizing that by this he forces the latter to become revolutionary.

The great decisions of human life have as a rule far more to do with the instincts and other mysterious unconscious factors than with conscious will and well-meaning reasonableness. The shoe that fits one person pinches another; there is no recipe for living that suits all cases. Each of us carries his own life-form- an indeterminable form which cannot be superseded by any other.