Mr Churchill, you are drunk. Madam, you are ugly, but I shall be sober in the morning.
Lady Astor: Mr. Churchill, if you were my husband, I'd poison your tea! Winston Churchill: Madam, if you were my wife, I would drink it.
Success is the ability to go from one failure to another with no loss of enthusiasm.
If you're going through hell, keep going.
To improve is to change, so to be perfect is to have changed often.