Elon Musk knows the value of putting your money where your mouth is, as he plans to personally fund Mars colonization.

Musk has made no secret of his belief that humanity must become a spacefaring race in order to survive. His company SpaceX is working toward that goal, and is one of the leading corporations involved in space exploration.

One of Musk’s primary goals is to colonize Mars. The tech mogul has previously stated his plan to send 1 million people to mars by 2050, using a fleet of 1,000 SpaceX Starships.

Needless to say, such lofty plans will involve tremendous expenditures, which Musk has a plan for: He’s selling his homes and worldly possessions to help fund his Mars dream.

“I think it is important for humanity to become a spacefaring civilization and a multiplanet species. And it’s going to take a lot of resources to build a city on Mars,” Musk told Axel Springer CEO Mathias Döpfner, via Business Insider. “I want to be able to contribute as much as possible to the city on Mars. That means just a lot of capital.” In Musk’s eyes, parting ways with his material possessions also signals that he’s committed to going to Mars.”

It’s a safe bet SpaceX will have a much easier time gaining support and investors for its efforts when its CEO is demonstrating such a high level of commitment.