Why can't Pluto be a planet? Some people like Pluto. And if it doesn't exist then they don't have a favorite planet. Right? Please write back but not in cursive because I can't read cursive.

The most successful scientists in the history of the world are those who posed the right questions

I wake up and I go to work. I don't look for the cup of coffee. The universe is enough of a draw for me - to awaken me and have me bound out of bed and go to my office.

Deep down within anyone there's a flame that maybe had gone dormant that can be fanned or ignited in case it had blown out. This is the flame of curiosity, the flame of wonder, of awe, of all the things that make you want to learn something more tomorrow than you knew today.

You don't need to be a scientist to know Earth's age or that life evolved. You just need be one who embraces objective truths

So not enough people in this world, I think, carry a cosmic perspective with them. It could be life-changing.

People think about life from day-to-day rather than thinking about life as something that invents a new kind of tomorrow.