We wish to find the truth, no matter where it lies. But to find the truth we need imagination and skepticism both. We will not be afraid to speculate, but we will be careful to distinguish speculation from fact.

Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.

Whatever the reason you're on Mars, I'm glad you're there, and I wish I was with you.

Much of human history can, I think, be described as a gradual and sometimes painful liberation from provincialism, the emerging awareness that there is more to the world than was generally believed by our ancestors.

If you want to make a [rhubarb] pie from scratch, first you have to create the universe.

Except in pure mathematics, nothing is known for certain (although much is certainly false).

Your god is too small for my universe.