“Nature is what we know. We do not know the gods of religions. And nature is not kind, or merciful, or loving. If God made me — the fabled God of the three qualities of which I spoke: mercy, kindness, love — He also made the fish I catch and eat. And where do His mercy, kindness, and love for that fish come in? No; nature made us — nature did it all — not the gods of the reli”

“I have not failed. I've just found 10,000 ways that won't work.”

“The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense.”

“Restlessness is discontent — and discontent is the first necessity of progress. Show me a thoroughly satisfied man — and I will show you a failure.”

“Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.”

“I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.”

“Genius is one percent inspiration and ninety-nine percent perspiration.”

“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.”

“There's a way to do it better - find it.”

“To my mind the old masters are not art their value is in their scarcity.”

“To have a great idea, have a lot of them.”