It is difficult for the isolated individual to work himself out of the immaturity which has become almost natural for him.

Deaths, births, and marriages, considering how much they are separately dependent on the freedom of the human will, should seem to be subject to no law according to which any calculation could be made beforehand of their amount; and yet the yearly registers of these events in great countries prove that they go on with as much conformity to the laws of nature as the oscillations of the weather.

For peace to reign on Earth, humans must evolve into new beings who have learned to see the whole first.

Humanity is at its greatest perfection in the race of the whites.

One is not rich by what one owns, but more by what one is able to do without with dignity.

Great minds think for themselves.

I feel a complete thirst for knowledge and an eager unrest to go further in it as well as satisfaction at every acquisition. There was a time when I believed that this alone could constitute the honor of mankind, and I had contempt for the ignorant rabble who know nothing.