"Elon came to the conclusion early in his career that life is short", Straubel said. "If you really embrace this, it leaves you with the obvious conclusion that you should be working as hard as you can."
You can love or hate the Elon Musk's personality, I can't imagine how it is possible not to have respect for him after having read this book. My biggest learning from this book is to never give up on your work when you're passionate about it, no matter what happens. Very inspiring.