The frontier in space, embodied in the space colony, is one in which the interactions between humans and their environment is so much more sensitive and interactive and less tolerant of irresponsibility than it is on the whole surface of the Earth.

An asteroid can literally destroy 80 or 90 percent of the species that are alive on Earth. These are big events. I mean, this is called extinction.

By preventing dangerous asteroid strikes, we can save millions of people, or even our entire species. And, as human beings, we can take responsibility for preserving this amazing evolutionary experiment of which we and all life on Earth are a part.

It is fantastic to think that one day we may be able to access fuel, materials and even water in space instead of digging deeper and deeper into our planet for what we need and then dragging it all up into orbit, against Earth's gravity.

Hollywood is enamored of the 20- to 30-year-old actress, but by the very nature of the life experience of the character, the roles cannot be that rich. You can only have Angelina Jolie in a mental hospital so many times.

The way Moore's Law occurs in computing is really unprecedented in other walks of life. If the Boeing 747 obeyed Moore's Law, it would travel a million miles an hour, it would be shrunken down in size, and a trip to New York would cost about five dollars. Those enormous changes just aren't part of our everyday experience.

You can't legislate into existence an act of forgiveness and a true confession; those are mysteries of the human heart, and they occur between one individual and another individual, not a panel of judges sitting asking questions, trying to test your truth.

Prayer in a combat zone serves exactly the same purpose as it does in peacetime. In war, the stakes are life and death, true; but if you believe in God and in the notion of a human soul, then we are always making decisions of tremendous significance.