Most people can accept the truth only in the form of a lie.

a man can be given only what he can use; and he can use only that for which he has sacrificed something

Can one alter one´s chief feature?" asked someone else. First it is necessary to know it. If you know it, much will depend on the quality of your knowing. If you know it well, then it is possible to change it.

Understanding is always the understanding of a smaller problem in relation to a bigger problem.

Psychology is sometimes called a new science. This is quite wrong. Psychology is, perhaps, the oldest science, and, unfortunately, in its most essential features a forgotten science.

In all living nature (and perhaps also in that which we consider as dead) love is the motive force which drives the creative activity in the most diverse directions.

The greatest barrier to consciousness is the belief that one is already conscious.