It is not known why the Lord made the human body as he did, since one might suppose that omnipotence could have made it such as would not have shocked the nice people.

Physics, owing to the simplicity of its subject matter, has reached a higher state of development than any other science.

The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved.

I believe that when I die I shall rot, and nothing of my ego will survive.

The habit of looking to the future and thinking that the whole meaning of the present lies in what it will bring forth is a pernicious one. There can be no value in the whole unless there is value in the parts.

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as poetry.

Moral progress has consisted in the main of protest against cruel customs, and of attempts to enlarge human sympathy.