The pace of progress on Mars depends upon the pace of progress of SpaceX.

I would like to die on Mars. Just not on impact.

Land on Mars, a round-trip ticket - half a million dollars. It can be done.

If humanity doesn't land on Mars in my lifetime, I would be very disappointed.

A lot depends on our first launch, ... Even though I really want to launch as soon as possible, I don't want to take any chances. I'd rather be late than sorry.

Mars is the only place in the solar system where it's possible for life to become multi-planetarian.