I can, therefore I am.

Things do not happen. Things are made to happen.

Be thine own palace, or the world's thy jail.

Well done is better than well said.

Only the educated are free.

Do not weep do not wax indignant. Understand.

It's always too early to quit.

The wise does at once what the fool does at last.

To know oneself, one should assert oneself.