In spite of the opinions of certain narrow-minded people who would shut up the human race upon this globe, we shall one day travel to the Moon, the planets, and the stars with the same facility, rapidity and certainty as we now make the ocean voyage from Liverpool to New York.

Anything one man can imagine, other men can make real.

How many things have been denied one day, only to become realities the next!

Whatever one man is capable of imagining, other men will prove themselves capable of realizing.

Science, my boy, is composed of errors, but errors that it is right to make, for they lead step by step to the truth.

The human mind delights in grand conceptions of supernatural beings.

In lighthearted countries, people joked about this phenomenon, but such serious, practical countries as England, America, and Germany were deeply concerned.