We need to make a world in which fewer children are born, and in which we take better care of them.

To present a scientific subject in an attractive and stimulating manner is an artistic task, similar to that of a novelist or even a dramatic writer. The same holds for writing textbooks.

Physics as we know it will be over in six months.

The belief that there is only one truth and that oneself is in possession of it seems to me the deepest root of all evil that is in the world.

The belief in a single truth is the root cause for all evil in the world.

Intellect distinguishes between the possible and the impossible; reason distinguishes between the sensible and the senseless. Even the possible can be senseless.

I believe there is no philosophical high-road in science, with epistemological signposts. No, we are in a jungle and find our way by trial and error, building our road behind us as we proceed.