We don’t stop playing because we grow old; we grow old because we stop playing.

Which painting in the National Gallery would I save if there was a fire? The one nearest the door of course.

If you injure your neighbour, better not do it by halves.

We have no more right to consume happiness without producing it than to consume wealth without producing it.

My reputation grows with every failure.

No man ever believes that the Bible means what it says: He is always convinced that it says what he means.

We should all be obliged to appear before a board every five years and justify our existence… on pain of liquidation.

When I was young, I observed that nine out of ten things I did were failures. So I did ten times more work.

Perhaps the greatest social service that can be rendered by anybody to the country and to mankind is to bring up a family.

What we want is to see the child in pursuit of knowledge, and not knowledge in pursuit of the child.