In the second half of life the necessity is imposed of recognizing no longer the validity of our former ideals but of their contraries. Of perceiving the error in what was previously our conviction, of sensing the untruth in what was our truth, and of weighing the degree of opposition, and even of hostility, in what we took to be love.

The darkness which clings to every personality is the door into the unconscious and the gateway of dreams, from which those two twilight figures, the shadow and the anima, step into our nightly visions or, remaining invisible, take possession of our ego-consciousness.

In order to know the light, we must first experience the darkness.

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.

Someone who is brave enough to withdraw all his projections, [is] an individual who is conscious of a pretty thick shadow.

Every victory contains the germ of future defeat.

You must go in quest of yourself, and you will find yourself again only in the simple and forgotten things.