Impossible things are simply those which so far have never been done.
The object of teaching a child is to enable him to get along without his teacher.
I rather like the World. The Flesh is pleasing and the Devil does not trouble me.
Where parents do too much for their children, the children will not do much for themselves.
Genius may have its limitations, but stupidity is not thus handicapped.
One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man.