There is much that science doesn't understand, many mysteries still to be resolved. In a Universe tens of billions of light-years across and some ten or fifteen billion years old, this may be the case forever. We are constantly stumbling on new surprises

The words "question" and "quest" are cognates. Only through inquiry can we discover truth.

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.

My wonder button is being pushed all the time.

I would be very ashamed of my civilization if we did not try to find out if there is life in outer space.

Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.

There are wonders enough out there without our inventing any.