The inventor is a man who looks around upon the world and is not contented with things as they are. He wants to improve whatever he sees, he wants to benefit the world; he is haunted by an idea. The spirit of invention possesses him, seeking materialization.

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When one door closes, another one opens.

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Before anything else, preparation is the key to success.

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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 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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Sometimes we stare so long at a door that is closing that we see too late the one that is open.

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God has strewn our paths with wonders and we certainly should not go through life with our eyes shut.

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You cannot force ideas. Successful ideas are the result of slow growth. Ideas do not reach perfection in a day, no matter how much study is put upon them.

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What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it.

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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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