"I think it's important to be very persistent. You have to keep going, even when things are tough."

"You can have a good idea, but if you don't execute it well, it won't be successful."

"We need to be willing to be misunderstood for long periods of time."

"It's not an experiment if you know it's going to work."

"I'm a big believer in the idea that if you have a great idea, you should pursue it relentlessly."