It's always too early to quit.

To know oneself, one should assert oneself.

Things do not happen. Things are made to happen.

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

I can, therefore I am.

Expect problems and eat them for breakfast.

Well done is better than well said.

Do not weep do not wax indignant. Understand.

If you're going through hell, keep going.