You can't keep your mind on fighting when you're thinking about a woman. You can't keep your concentration. You feel like sleeping all the time.
Muhammad AliIf they can make penicillin out of mouldy bread, they can sure make something out of you.
Muhammad AliRest but never quit. Even the sun has a sinking spell each evening. But it always rises the next morning. At sunrise, every soul is born again.
Muhammad Ali