Quality is not an act, it is a habit.
Well done is better than well said.
The wise does at once what the fool does at last.
The secret of getting ahead is getting started.
Who seeks shall find.
If you're going through hell, keep going.
Never complain and never explain.
It's always too early to quit.
I can, therefore I am.
If you think you can do it, you can.
He fertilizes a phrase or a line of poetry for weeks and then gives birth to it in a speech.