Humans are the only creatures with the ability to dive deep in the sea, fly high in the sky, send instant messages around the globe, reflect on the past, assess the present and imagine the future.

The opportunity that is unique [to our] time is what inspires me to do everything I can to move things forward. This is the first time that we have the capacity to understand our place in the greater scheme of things to the extent that we do.

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

The Earth is a unique system in the universe, the only planet we know of that's hospitable for humankind.

Nearly all of the major kinds of life, divisions of life, phyla of animals, occur in the sea. Only about half of them can make it to land or freshwater.

With knowing comes caring.

If you make the choice to just go with the flow, that is a choice to make a difference in a negative way.