When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking.

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When the impossible has been eliminated, all that remains no matter how improbable is possible.

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Any truth is better than indefinite doubt.

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The love of books is among the choicest gifts of the gods.

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Skill is fine, and genius is splendid, but the right contacts are more valuable than either.

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It has long been an axiom of mine that the little things are infinitely the most important.

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Education never ends, Watson. It is a series of lessons, with the greatest for the last.

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It is stupidity rather than courage to refuse to recognize danger when it is close upon you.

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The world is full of obvious things which nobody by any chance ever observes.

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You yourself may not be luminous, but you are a conductor of light.

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