By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right implies also a duty: one must not conceal any part of what on has recognized to be true. It is evident that any restriction on academic freedom acts in such a way as to hamper the dissemination of knowledge among the people and thereby impedes national judgment and action.

Common sense is the collection of prejudices acquired by age eighteen.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

Insanity: doing the same thing over and over again and expecting different results.

Intellectual growth should commence at birth and cease only at death.

Be kind to people who are different from you.

Creating a new theory is not like destroying an old barn and erecting a skyscraper in its place. It is rather like climbing a mountain, gaining new and wider views, discovering unexpected connections between our starting points and its rich environment. But the point from which we started out still exists and can be seen, although it appears smaller and forms a tiny part of our broad view gained by the mastery of the obstacles on our adventurous way up.

Economists and workplace consultants regard it as almost unquestioned dogma that people are motivated by rewards, so they don’t feel the need to test this. It has the status more of religious truth than scientific hypothesis. The facts are absolutely clear. There is no question that in virtually all circumstances in which people are doing things in order to get rewards, extrinsic tangible rewards undermine intrinsic motivation.The bonus myth: How paying for results can backfire The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.