The undevout astronomer must be mad.

The phenomena of nature, especially those that fall under the inspection of the astronomer, are to be viewed, not only with the usual attention to facts as they occur, but with the eye of reason and experience.

That planet has a considerable but moderate atmosphere. So that the inhabitants probably enjoy a situation in many respects similar to ours.

I have looked farther into space than ever a human being did before me.

Seeing is in some respect an art, which must be learnt.

The difference of the degrees in which the individuals of a great community enjoy the good things of life has been a theme of declaration and discontent in all ages.

By reflecting a little on this subject I am almost convinced that those numberless small Circuses we see on the moon are the works of the Lunarians and may be called their Towns.