Extraordinary claim requires extraordinary proof.

I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

History is full of people who out of fear, or ignorance, or lust for power has destroyed knowledge of immeasurable value which truly belongs to us all. We must not let it happen again.

Those who seek power at any price detect a societal weakness, a fear that they can ride into office.

Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.

A single message from space will show that it is possible to live through technological adolescence. . . . It is possible that the future of human civilization depends on the receipt of interstellar messages.

The cosmos is all there is, all there ever was, and all there ever will be.