Be thine own palace, or the world's thy jail.
Wherever you are - be all there.
Problems are not stop signs, they are guidelines.
If you're going through hell, keep going.
After a storm comes a calm.
Only the educated are free.
Always desire to learn something useful.
The dog that trots about finds a bone.
Be gentle to all and stern with yourself.
Begin to be now what you will be hereafter.
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.