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

Each act of cruelty is eternally a part of the universe; nothing that happens later can make that act good rather than bad, or can confer perfection on the whole of which it is a part.

Remote from human passions, remote even from the pitiful facts of nature, the generations have gradually created an ordered cosmos [mathematics], where pure thought can dwell in its natural home.

All who are not lunatics are agreed about certain things : That it is better to be alive than dead, better to be adequately fed than starved, better to be free than a slave

To understand a name you must be acquainted with the particular of which it is a name.

I am myself a dissenter from all known religions, and I hope that every kind of religious belief will die out.

What men really want is not knowledge but certainty.