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

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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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When one door closes, another one opens.

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A man, as a general rule, owes very little to what he is born with - a man is what he makes of himself.

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It is the man who carefully advances step by step...who is bound to succeed in the greatest degree.

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Before anything else, preparation is the key to success.

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The only difference between success and failure is the ability to take action.

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One day every major city in America will have a telephone.

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

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