Neil deGrasse Tyson

Carl Sagan spoke fluently between biology and geology and astrophysics and physics. If you move fluently across those boundaries, you realize that science is everywhere; science is not something you can step around or sweep under the rug.

Those who see the cosmic perspective as a depressing outlook, they really need to reassess how they think about the world. Because when I look up in the universe, I know I'm small but I'm also big. I'm big because I'm connected to the universe, and the universe is connected to me.

I haven't gotten jobs because I'm famous or I have a big Twitter feed - it's primarily directors. People employ me because I'm right for the part. But then, everybody needs a bit of luck, being in the right place at the right time. You just gotta be in that place for that opportunity to come by.