"We are doing what we can to have the future be as good as possible, to be inspired by what is likely to happen and to look forward to the next day."
Musk says that is what's directly behind his two most well-known companies, Tesla and SpaceX.
"I want to be able to think about the future and feel good about that." -Elon Musk, billionaire, CEO of SpaceX and Tesla
"I think it is pretty important that we accelerate the transition to sustainable generation and consumption of energy," says Musk of his quest to produce eco-friendly vehicles. "It's inevitable, but it matters if it happens sooner or later."
In June, Musk removed himself from President Donald Trump's advisory councils when the President promised to pull out of the Paris Climate Agreement.
As for Space X, that's "about helping to make life multi-planetary," he says.
According to Musk, we will have no other alternative but to eventually live and work on the red planet because, "There will be some eventual extinction event," on Earth, says Musk in academic journal New Space.
To make moving to Mars a reality requires making it more affordable, says Musk. And he believes it is possible. "It [will get] to the point where almost anyone, if they saved up and this was their goal, could buy a ticket and move to Mars," he says.