We are made of starstuff.

We are not smart enough to decide which pieces of knowledge are permissible and which are not.

As agonizing a disease as cancer is, I do not think it can be said that our civilization is threatened by it. ... But a very plausible case can be made that our civilization is fundamentally threatened by the lack of adequate fertility control. Exponential increases of population will dominate any arithmetic increases, even those brought about by heroic technological initiatives, in the availability of food and resources, as Malthus long ago realized.

I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue.

Some racists still reject the plain testimony written in the DNA that all the races are not only human but nearly indistinguishable. . . .

Humans - who enslave, castrate, experiment on, and fillet other animals - have had an understandable penchant for pretending animals do not feel pain.

If we offer too much silent assent about mysticism and superstition - even when it seems to be doing a little good - we abet a general climate in which scepticism is considered impolite, science tiresome, and rigorous thinking somehow stuffy and inappropriate.