There is much more opportunity than there are people to see it.
Genius is one percent inspiration, ninety-nine percent perspiration.
The thing I lose patience with the most is the clock. Its hands move too fast
Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.
Having a vision for what you want is not enough...Vision without execution is hallucination
Mr. Edison worked endlessly on a problem, using the method of elimination. If a person asked him if he were discouraged because so many attempts proved unavailing, he would say, "No, I am not discouraged, because every wrong attempt discarded is another step forward.".