A memory is what is left when something happens and does not completely unhappen.

The vertical thinker says: 'I know what I am looking for.' The lateral thinker says: 'I am looking but I won't know what I am looking for until I have found it.'

Thinking is the ultimate human resource. Yet we can never be satisfied with our most important skill. No matter how good we become, we should always want to be better

Everyone has the right to doubt everything as often as he pleases and the duty to do it at least once. No way of looking at things is too sacred to be reconsidered. No way of doing things is beyond improvement.

Everywhere I go, I see very much the same thing. I see the same compassion for people who live half a world away. I see the same concern about events beyond these borders. And, increasingly, I see the same conviction that we can and we must join together to stop the scourge of AIDS and poverty.

A myth is a fixed way of looking at the world which cannot be destroyed because, looked at through the myth, all evidence supports the myth.

Being right is not too difficult. Your choose your perception. You select your information. You leave out what does not suit you. You drag in some general-purpose value words. You throw in a sneer or two about the opposition, and you are a fine fellow who made a fine speech.