“The nature of process, to one degree or another, involves failure. You have at it. It doesn’t work. You keep pushing. It gets better. But it’s not good. It gets worse. You go at it again. Then you desperately stab at it, believing ‘this isn’t going to work.’ And it does!”

more info

“Next to imagination you have to have perseverance in order to create something of value. I may even say that perseverance is more important than imagination in a certain sense. A modest amount of imagination with a great ability to persevere can produce an important work. Great imagination lacking the perseverance to develop, shape, and carry it out can result in failure.”

more info