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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You see, but you do not observe.

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

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

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There is nothing more deceptive than an obvious fact.

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Dogs don't make mistakes.

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It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

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