Be gentle to all and stern with yourself.
Only the educated are free.
To know oneself, one should assert oneself.
It's always too early to quit.
By failing to prepare, you are preparing to fail.
The most effective way to do it, is to do it.
Always desire to learn something useful.
Wherever you are - be all there.
Problems are not stop signs, they are guidelines.
The dog that trots about finds a bone.
All science is either physics or stamp collecting.
