Knowledge is realizing that the street is one way; wisdom is looking in both directions anyway.

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Never underestimate your own ignorance.

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There comes a point in your life when you need to stop reading other people's books and write your own.

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Everyone knew it was impossible, until a fool who didn't know came along and did it.

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We can't solve today's problems with the mentality that created them.

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Weak people revenge. Strong people forgive. Intelligent People Ignore.

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Student is not a container you have to fill but a torch you have to light up.

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If one day you have to choose between the world and love, remember this: If you choose the world you’ll be left without love, but if you choose love, with it you will conquer the world

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I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

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Once you stop learning, you start dying

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