If you're going through hell, keep going.
After a storm comes a calm.
The dog that trots about finds a bone.
The secret of getting ahead is getting started.
Know or listen to those who know.
Leap, and the net will appear.
Be thine own palace, or the world's thy jail.
It's always too early to quit.
Either you run the day or the day runs you.
Well done is better than well said.
Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great amount of imagination.