You see, but you do not observe.

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There is nothing more deceptive than an obvious fact.

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

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

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Life is infinitely stranger than anything which the mind of man could invent.

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Any truth is better than indefinite doubt.

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The most dangerous condition for a man or a nation is when his intellectual side is more developed than his spiritual. Is that not exactly the condition of the world today?

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

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A dog reflects the family life. Whoever saw a frisky dog in a gloomy family, or a sad dog in a happy one? Snarling people have snarling dogs, dangerous people have dangerous ones.

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

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