If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then, we are up for grabs for the next charlatan (political or religious) who comes rambling along.

In all our searching, the only thing we've found that makes the emptiness bearable is each other.

We on Earth have just awakened to the great oceans of space and time from which we have emerged.

Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.

The visions we offer our children shape the future.

Ours is the first generation that has grown up with science-fiction ideas.

The passion to explore is at the heart of being human.