“People think that they think things, and they also think that they know things. They could usefully give some attention to the question of whether they know what they think and know what they think they know.”

“One can give or withhold in a manner far more effective, sophisticated, useful, which is quite invisible to people who think that giving or withholding is done by external assessment. If you seek some mark of favour or 'promotion', know that you are not ready for it. Progress comes through capacity to learn, and is irresistible. Nobody can stand between you and knowledge if you are fit for it.”

“From time to time ponder whether you are unconsciously saying:'Truth is what I happen to be thinking at this moment.”

“Banality is like boredom: bored people are boring people, people who think that things are banal are themselves banal.Interesting people can find something interesting in all things.”

“When the human being says:'It is not true...'He may mean:'I don't know about it, so I think it is untrue.'Or:'I don't like it.”

“It is not only a matter of not caring who knows - it is also a matter of knowing who cares.”

“The stupidest man I ever met had a favourite saying.It was:'What do you think I am, stupid, or something?”