So I don't know much about this guy as a person (I tend to assume that all super-rich CEO types are at least 40% evil but I've been proven wrong before), but his love for science fiction books (which is mentioned throughout the article I've quoted below) gives him at least a little credit in my eyes.
(talking about his "existential crisis" as a young teen)
"I read a lot of books, and it didn't sound like anything really had the answer to what's the meaning of life," Musk says. "And then it's like, 'Is it all meaningless?' I was reading Schopenhauer and Nietzsche, and it was terrible. No one should read them. It's too depressing. They were not happy people."
The answer eventually came (as it does for many disaffected teenage boys, even those not reading Nietzsche) through the cult 1979 novel The Hitchhiker's Guide to the Galaxy, by Douglas Adams, a writer known, perhaps not coincidentally, for his interest in both environmental conservation and fast cars.
"I thought Adams was actually quite good because he was making the point that the question is the real difficulty," says Musk. "The universe is essentially the answer, so what's the question? As we strive for enlightenment, we better understand what questions to ask about the nature of the universe. It seems like there's a fundamental good in that. So that seemed like a good way to apply my efforts-- to strive for greater enlightenment."
[Vogue October 2015, Meghan Daum]