“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.”
“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.”
“I like friends who have independent minds
because they tend to make you see problems from
all angles.”
“Real leaders must be ready to sacrifice all for the
freedom of their people.”
“A fundamental concern for others in our individual
and community lives would go a long way in
making the world the better place we so
passionately dreamt of.”
“Everyone can rise above their circumstances and
achieve success if they are dedicated to and
passionate about what they do.”
“Education is the most powerful weapon which you
can use to change the world.”
“I learned that courage was not the absence of
fear, but the triumph over it. The brave man is not
he who does not feel afraid, but he who conquers
that fear.”
“For to be free is not merely to cast off one’s
chains, but to live in a way that respects and
enhances the freedom of others.”
“Resentment is like drinking poison and then
hoping it will kill your enemies.”
“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.”
“A good head and a good heart are always a
formidable combination.”
Source http://www.informationng.com/2013/12/nelson-mandelas-most-powerful-quotes.html

Good one. He stil has more though.