Let yourself be guided in your pedagogic interventions especially by the observations you have made on the results of your former interventions.

The important thing is never to let oneself be guided by the opinion of one's contemporaries; to continue steadfastly on one's way without letting oneself be either defeated by failure or diverted by applause.

The only normal people are the ones you don't know very well.

Meanings are not determined by situations, but we determine ourselves by the meanings we give to situations.

No experience is a cause of success or failure. We do not suffer from the shock of our experiences, so-called trauma - but we make out of them just what suits our purposes.

seeing with the eyes of another, listening with the ears of another, and feeling with the heart of another.