You know of the man.  Things that are obvious do not need to be explained.

Here are some of Nelson Mandela’s most famous quotes:

• “Education is the most powerful weapon which you can use to change the world.”
• “If you want to make peace with your enemy, you have to work with your enemy. Then he becomes your partner.”
• “It always seems impossible until it’s done.”
• “If I had my time over I would do the same again. So would any man who dares call himself a man.”
• “Real leaders must be ready to sacrifice all for the freedom of their people.”
• “Everyone can rise above their circumstances and achieve success if they are dedicated to and passionate about what they do.”
• “Lead from the back — and let others believe they are in front.”
• “Do not judge me by my successes, judge me by how many times I fell down and got back up again.”
• “I hate race discrimination most intensely and in all its manifestations. I have fought it all during my life; I fight it now, and will do so until the end of my days.”
• “Difficulties break some men but make others. No axe is sharp enough to cut the soul of a sinner who keeps on trying, one armed with the hope that he will rise even in the end.”