2 Quotes by Stephen L. Petranek

If we get it wrong, if we repeat the mistakes of our past, the consequences could be devastating. But if we get it right, the potential benefits to the future of humanity are astonishing.

The Mars settlement may not grow that quickly, although the length of a sea voyage cross the Atlantic in the 1600's is comparable to the time it will take people to get to Mars on a spacecraft, and the cost, in relative terms, is not that different.