The advancement and diffusion of knowledge is the only guardian of true liberty. -- James Madison

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Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.

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There is no knowing that does not begin with knowing God. ― John Calvin

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Courage is a special kind of knowledge: the knowledge of how to fear what ought to be feared and how not to fear what ought not to be feared. - David Ben-Gurion

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Ignorance is the curse of God; knowledge is the wing wherewith we fly to heaven. - William Shakespeare

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When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive knowledge. Albert Einstein

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The the question whether I am a pessimist or an optimist, I answer that my knowledge is pessimistic, but my willing and hope are optimistic.

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Thought must be divided against itself before it can come to any knowledge of itself.

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The man who sees both sides of a question is a man who sees absolutely nothing. ― Oscar Wilde

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Thought is the wind and knowledge the sail. - David Hare

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