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

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My name is Sherlock Holmes. It is my business to know what other people do not know.

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

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Any truth is better than indefinite doubt.

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

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

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You see, but you do not observe.

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

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There is nothing more deceptive than an obvious fact.

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