Those with the courage to explore the weave and structure of the Cosmos, even where it differs profoundly from their wishes and prejudices, will penetrate its deepest mysteries.

[One's] inability to invalidate your hypothesis is not at all the same thing as proving it true.

We have entered, almost without noticing, an age of exploration and discovery unparalleled since the Renaissance.

The Cosmos is all that is or ever was or ever will be.

If we ruin the earth, there is no place else to go

We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.

You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep seated need to believe