The Titanic will protect itself.

Remember to always dream. More importantly, work hard to make those dreams come true and never give up.

I love all of the Earth.

There's probably more history now preserved underwater than in all the museums of the world combined. And there's no law governing that history. It's finders keepers.

Everything I'm going to present to you was not in my textbooks when I went to school ... not even in my college textbooks. I'm a geophysicist, and [in] all my Earth science books when I was a student - I had to give the wrong answer to get an A.

I prefer sayings over jokes.

The body is sort of a pain. It has to go to the bathroom. It has to be comfortable. But the spirit is indestructible. It can move at the speed of light.