Equipped with his five senses, man explores the universe around him and calls the adventure Science.

The history of astronomy is a history of receding horizons.

The great spirals... apparently lie outside our stellar system.

We find them smaller and fainter, in constantly increasing numbers, and we know that we are reaching into space, farther and farther, until, with the faintest nebulae that can be detected with the greatest telescopes, we arrive at the frontier of the known universe.

When you stop comparing what is right here and now with what you wish were, you can begin to enjoy what is.

All you must do is accept all that is unacceptable to you.