Teaching creationism in science class as an alternative to evolution is inappropriate.

By the way, most of the light that comes from the sun is green.

America has had many other discoverers besides Columbus, but he seems to have made more satisfactory arrangements with the historians than any of the others.

Recommending or insisting on abstinence has been completely ineffective.

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.

The philosophy of science is inherent in the process. This is to say, you think critically, you draw a conclusion based on evidence, but we all pursue discovery based on our observations. That's where science starts.

What happens to other species also happens to us.