I can, therefore I am.
Be thine own palace, or the world's thy jail.
Either you run the day or the day runs you.
The most effective way to do it, is to do it.
Expect problems and eat them for breakfast.
The dog that trots about finds a bone.
If you're going through hell, keep going.
What you do today can improve all your tomorrows.
Know or listen to those who know.
After a storm comes a calm.
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.