Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
The secret of getting ahead is getting started.
After a storm comes a calm.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
I can, therefore I am.
The dog that trots about finds a bone.
Be thine own palace, or the world's thy jail.
Well done is better than well said.
One of the things that ultimately led me to leave mathematics and go into political science was thinking I could prevent nuclear war.