It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

Time spent with children is time well spent. Their little minds are not constrained by 'reality' or focused upon goals. Anything and everything is possible. Imagination will often carry us to worlds that never were. But without it we go nowhere.

Preserve and cherish the pale blue dot, the only home we've ever known.

If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth.

I maintain there is much more wonder in science than in pseudoscience. And in addition, to whatever measure this term has any meaning, science has the additional virtue, and it is not an inconsiderable one, of being true.

The universe is a pretty big place. If it's just us, seems like an awful waste of space.

We humans look rather different from a tree. Without a doubt we perceive the world differently than a tree does. But down deep, at the molecular heart of life, the trees and we are essentially identical.