The history of man is essentially zoological; it becomes human late in the day, and then only in the beautiful souls, the souls alive to justice, goodness, enthusiasm, and devotion. The angel shows itself rarely and with difficulty through the highly-organized brute.

To do what is impossible for talent is the mark of genius.

Nothing is more characteristic of a man than the manner in which he behaves toward fools.

Our greatest illusion is to believe that we are what we think ourselves to be.

Time and space are fragments of the infinite for the use of finite creatures.

The stationary condition is the beginning of the end

What governs men is the fear of truth.