It is my mission to change the world. I'm not kidding: Make no small plans, dream mighty things. I feel if we get enough people engaged in climate change, we will get enough people to change the world. We will revolutionize the way we produce electricity and provide clean water to people.

Anybody who grew up with the space program is a fan of science fiction.

SCIENCE is a part of EVERYONE'S everyday life.

As my old professor Carl Sagan said so often, 'When you’re in love, you want to tell the world.’ And I base my beliefs on the information and the process that we call science. It fills me with joy to make discoveries every day of things I’ve never seen before. It fills me with joy to know that we can pursue these answers. It is an astonishing thing that we are — you and I are one of the ways the universe knows itself.

Our goal in science is to discover universal laws of nature. That pursuit fills me with wonder.

From an evolutionary standpoint you can't just wipe everything out and start over, and I don't think you can do it in the school system either.

Reading their letters and the First Amendment of the US Constitution, I infer that this nation's founders noted that religions have been at the center of great deal of trouble, so they precluded the US government from getting involved in religion, i.e. "... shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof..." Over the centuries, various religions have laid claim to various morals; consider the difficulties outsiders are having today in the Middle East, for example.