It's always too early to quit.

What you do today can improve all your tomorrows.

The most effective way to do it, is to do it.

If you've got a talent, protect it.

To know oneself, one should assert oneself.

I can, therefore I am.

Do not weep do not wax indignant. Understand.

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

Never complain and never explain.