It's always too early to quit.
To know oneself, one should assert oneself.
The wise does at once what the fool does at last.
Be thine own palace, or the world's thy jail.
Always desire to learn something useful.
I can, therefore I am.
Problems are not stop signs, they are guidelines.
Do not weep do not wax indignant. Understand.
If you've got a talent, protect it.
Only the educated are free.
It is the nature of truth in general, as of some ores in particular, to be richest when most superficial.