It's always too early to quit.
Always desire to learn something useful.
Never complain and never explain.
After a storm comes a calm.
To know oneself, one should assert oneself.
If you've got a talent, protect it.
Only the educated are free.
Be gentle to all and stern with yourself.
The most effective way to do it, is to do it.
The dog that trots about finds a bone.
A teacher must believe in the value and interest of his subject as a doctor believes in health.
A good teacher is a determined person.