My position concerning God is that of an agnostic. I am convinced that a vivid consciousness of the primary importance of moral principles for the betterment and ennoblement of life does not need the idea of a law-giver, especially a law-giver who works on the basis of reward and punishment.

In theory, theory and practice are the same. In practice, they are not.

I believe that Gandhi’s views were the most enlightened of all the political men of our time.

Nothing happens until something moves.

Science is the process of making obviously erroneous ideas less obviously erroneous.

... it is a welcome symptom in an age which is commonly denounced as materialistic, that it makes heroes of men whose goals lie wholly in the intellectual and moral sphere.

The idle man does not know what it is to enjoy rest.