Everything we call real is made of things that cannot be regarded as real. - Niels Bohr

An expert is a person who has found out by his own painful experience all the mistakes that one can make in a very narrow field.

There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about Nature.

The very fact that knowledge is itself the basis for civilization points directly to openness as the way to overcome the present crisis.