When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us.

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Don't keep forever on the public road, going only where others have gone. Leave the beaten track occasionally and dive into the woods. You will be certain to find something you have never seen before. Of course it will be a little thing, but do not ignore it. One discovery will lead to another, and before you know it, you will have something worth thinking about to occupy your mind, and really big discoveries are the result of thought.

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When one door closes, another one opens.

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Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.

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Don't keep forever on the public road, going only where others have gone and following one after the other like a flock of sheep. Leave the beaten track occasionally and dive into the woods.

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First words on the first telephone - "Mr. Watson - come here - I want to see you.

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Great discoveries and improvements invariably involve the cooperation of many minds.

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There are two critical points in every aerial flight-its beginning and its end.

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The most successful men in the end are those whose success is the result of steady accretion.

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Before anything else, preparation is the key to success.

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