Learning is experience. Everything else is just information.

The scientist finds his reward in what Henri Poincare calls the joy of comprehension, and not in the possibility of application to which any discovery may lead.

In talking about human rights today, we are referring primarily to the following demands: protection of the individual against arbitrary infringement by other individuals or by the government; the right to work and to adequate earnings from work; freedom of discussion and teaching; adequate participation of the individual in the formation of his government. These human rights are nowadays recognised theoretically, although, by abundant use of formalistic, legal manoeuvres, they are being violated to a much greater extent than even a generation ago.

Before God we are all equally wise - and equally foolish.

Without deep reflection one knows from daily life that one exists for other people.

The special theory of relativity owes its origins to Maxwell's equations of the electromagnetic field.

To my mind, to kill in war is not a whit better than to commit ordinary murder.