Science

Life is a struggle with uncertain outcomes. Nonetheless, the natural world remains the substrate on which we must build our existence.

We went to the moon to explore it, but in fact, we discovered Earth for the first time.

Your diploma is really not a ticket to show off what you know. You know what it really is? It's permission to admit to yourself how much you still have yet to learn.

There is no solution to a problem that does not embrace all that we have created as a species.

The person under 25 is less a rough draft than a finely honed instrument, tailor-made for one of life's greatest periods of challenge and change.

They didn't fail less. They rescued more.

Success comes to the prepared mind. Success is not like rain that falls from the sky equally upon everyone. Success is what you reap when you sow with passion and optimism.

The soft power of science has the potential to reshape global diplomacy—and at significantly lower expense than that needed for use of the hard power of military involvement.

Without hard work, we are not entitled to a good life—and without compassion, we will not attain the good life in a world-majority population of have-nots.

We have stone-age emotions, medieval institutions, and godlike technology. These three stanchions of current civilization explain why we are constantly in trouble.

Go forth. Think. Save the world.

We're all strapped in, seated together on a gigantic ball whirling around the sun at 67,000 miles per hour, nested in a galaxy hurtling through the depths of space and time at 1.3 million miles per hour.