If you're going through hell, keep going.
Always desire to learn something useful.
Be thine own palace, or the world's thy jail.
It's always too early to quit.
Go for it now. The future is promised to no one.
Things do not happen. Things are made to happen.
What you do today can improve all your tomorrows.
To know oneself, one should assert oneself.
Expect problems and eat them for breakfast.
Be gentle to all and stern with yourself.
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.