Elon Musk says

“No, I don't ever give up. I'd have to be dead or completely incapacitated”

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“Success is a lousy teacher. It seduces smart people into thinking they can't lose.”

“Yes We Can!”

“What are the secret of success? - one word answer: "rational".”

“”You’ve worn me down” is an awful decision-making process. It’s slow and de-energizing. Go for quick escalation instead – it’s better.”

“E-mail has some magical ability to turn off the politeness gene in a human being.”

“Humanity is at a crossroads. We can continue down the current path of greed, consumerism, oligarchy, poverty, war, racism, and environmental degradation. Or we can lead the world in moving in a very different direction.”

“Most decisions should probably be made with around 70% of the information you wish you had. If you wait for 90%, in most cases, you’re probably being slow.”

“The death knell for any enterprise is to glorify the past -- no matter how good it was.”