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I've never made a mistake. I've only learned from experience.
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The great trouble is that the preachers get the children from six to seven years of age and then it is almost impossible to do anything with them.
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None of my inventions came by accident. I see a worthwhile need to be met and I make trial after trial until it comes. What it boils down to is one per cent inspiration and ninety-nine per cent perspiration.
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His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine.
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Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.
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Through all the years of experimenting and research, I never once made a discovery. I start where the last man left off... All my work was deductive, and the results I achieved were those of invention pure and simple.
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Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of disease. Medicine is played out. Every new discovery of bacteria shows us all the more convincingly that we have been wrong and that the million tons of stuff we have taken was all useless.
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Sticking to it is the genius.
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I was at the foot of my class.
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The inventor can't do it all, you've got to change people. We have an enormous capacity to invent super-machinery. But our desire to install the device is weak. Human inertia is the problem, not invention. Something in man makes him resist change.
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There is a better way for everything. Find it.
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The secret of success is focus of purpose.
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Genius is one percent inspiration, ninety-nine percent perspiration.
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A man’s best friend is a good wife.
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The perils of overwork are slight compared with the dangers of inactivity.
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I would construct and work along various lines until I found them untenable. When one theory was discarded, I developed another at once. I realized very early that this was the only possible way for me to work out all the problems.
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I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours - and thrived on it.
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One might think that the money value of an invention constitutes its reward to the man who loves his work. But... I continue to find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.
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Let the public throw bouquets to the inventors and in time we will all be happy.
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What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.
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Time is really the only capital that any human being has, and the only thing he can't afford to lose.
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For faith, as well intentioned as it may be, must be built on facts, not fiction - faith in fiction is a damnable false hope.
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Great ideas originate in the muscles.
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The greatest invention in the world is the mind of a child.