Most people see what is, and never see what can be.

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Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

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If you want different results, do not do the same things.

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We cannot get to where we dream of being tomorrow unless we change our thinking today.

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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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We cannot solve our problems with the same thinking we used when we created them.

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A problem defined, is a problem half solved.

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Insanity: doing the same thing over and over again and expecting different results.

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If you can't explain something simply, you don't know enough about it.

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The only thing more dangerous than ignorance is arrogance

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