Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.
Genius is one percent inspiration and ninety-nine percent perspiration.
I never did a day's work in my life. It was all fun.
I have not failed. I've just found 10,000 ways that won't work.
I start where the last man left off.
To have a great idea, have a lot of them.
There's a way to do it better - find it.