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

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

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Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

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Persistence is the most powerful force on earth, it can move mountains.

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If people are good because they fear punishment, and hope for reward, then we are a sorry lot indeed.

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The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.

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The individual who has experienced solitude will not easily become a victim of mass suggestion.

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If you can't explain it simply, you don't understand it well enough.

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I don't need to know everything, I just need to know where to find it, when I need it

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Failure is only postponed success as long as courage 'coaches' ambition.

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