Either you run the day or the day runs you.
Never complain and never explain.
Be thine own palace, or the world's thy jail.
The secret of getting ahead is getting started.
The most effective way to do it, is to do it.
After a storm comes a calm.
Well done is better than well said.
Only the educated are free.
What you do today can improve all your tomorrows.
It's always too early to quit.
Beauty is the first test: there is no permanent place in the world for ugly mathematics.