It is my view that the vegetarian manner of living, by its purely physical effect on the human temperament, would most beneficially influence the lot of mankind.

When forced to summarize the general theory of relativity in one sentence: Time and space and gravitation have no separate existence from matter.

For an idea that does not first seem insane, there is no hope.

Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted.

Compassionate people are geniuses in the art of living, more necessary to the dignity, security, and joy of humanity than the discoverers of knowledge.

Philosophers play with the word, like a child with a doll.... It does not mean that everything in life is relative.

The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.