I prefer peace. But if trouble must come, let it come in my time, so that my children can live in peace.

A broad margin of leisure is as beautiful in a man's life as in a book. Haste makes waste, no less in life than in housekeeping. Keep the time, observe the hours of the universe, not of the cars.

You can't just ask customers what they want and then try to give that to them. By the time you get it built, they'll want something new.

Don't spend time beating on a wall, hoping to transform it into a door.

Success does not consist in never making mistakes but in never making the same one a second time.