If you're going through hell, keep going.
Do not weep do not wax indignant. Understand.
Without hard work, nothing grows but weeds.
Who seeks shall find.
Things do not happen. Things are made to happen.
Be gentle to all and stern with yourself.
Either you run the day or the day runs you.
By failing to prepare, you are preparing to fail.
Always desire to learn something useful.
After a storm comes a calm.
A mathematician is a person who can find analogies between theorems a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.