Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

Instinct is a marvellous thing. It can neither be explained nor ignored.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

The only limit to our realization of tomorrow will be our doubts of today.

Science may set limits to knowledge, but should not set limits to imagination.

Doubt is the origin of wisdom

A man is literally what he thinks.

Intellectuals solve problems, geniuses prevent them.

Be sure you put your feet in the right place, then stand firm.

Achievement brings its own anticlimax.

We never see ourselves as others see us.

You cannot truly listen to anyone and do anything else at the same time.

Good advice is always certain to be ignored, but that's no reason not to give it.

You have heard that it was said, 'Eye for eye, and tooth for tooth.' But I tell you, do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also.

It's not a question of learning much.On the contrary.It's a question of UNLEARNING much.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Appearances often are deceiving.

You don't become what you want, you become what you believe

There are no eternal facts, as there are no absolute truths.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

We sometimes congratulate ourselves at the moment of waking from a troubled dream; it may be so the moment after death.