I can, therefore I am.
Quality is not an act, it is a habit.
Never complain and never explain.
Things do not happen. Things are made to happen.
Always desire to learn something useful.
Without hard work, nothing grows but weeds.
You never know what motivates you.
To be a good loser is to learn how to win.
Either you run the day or the day runs you.
Begin to be now what you will be hereafter.
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.