Quality is not an act, it is a habit.
What you do today can improve all your tomorrows.
The wise does at once what the fool does at last.
Who seeks shall find.
By failing to prepare, you are preparing to fail.
I can, therefore I am.
Go for it now. The future is promised to no one.
Be kind whenever possible. It is always possible.
Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
I wrote somewhere during the Cold War that I sometimes wish the Iron Curtain were much taller than it is, so that you could see whether the development of science with no communication was parallel on the two sides. In this case it certainly wasn't.