Well done is better than well said.
I can, therefore I am.
Begin to be now what you will be hereafter.
By failing to prepare, you are preparing to fail.
Leap, and the net will appear.
Know or listen to those who know.
It's always too early to quit.
Always desire to learn something useful.
Things do not happen. Things are made to happen.
Problems are not stop signs, they are guidelines.
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.