Justice is to be found only in the imagination.

I have not the slightest pretension to call my verses poetry; I write now and then for no other purpose than to relieve depression or to improve my English.

One can state, without exaggeration, that the observation of and the search for similarities and differences are the basis of all human knowledge.

I intend to leave after my death a large fund for the promotion of the peace idea, but I am skeptical as to its results.

My home is where I work, and I work everywhere.

Good wishes alone will not ensure peace.

For me writing biographies is impossible, unless they are brief and concise, and these are, I feel, the most eloquent.