Imagination is greater than knowledge.
How insidious Nature is when one is trying to get at it experimentally.
The idle man does not know what it is to enjoy rest.
Man owes his strength in the struggle for existence to the fact that he is a social animal.
Racism is America's greatest disease, racism is a disease of the white man.
But nature did not deem it her business to make the discovery of her laws easy for us.