The age we live in is a busy age; in which knowledge is rapidly advancing towards perfection.

Cosmology is a rapidly advancing field.

As to the evil which results from a censorship, it is impossible to measure it, for it is impossible to tell where it ends.

It is the greatest good to the greatest number of people which is the measure of right and wrong.

Stretching his hand up to reach the stars, too often man forgets the flowers at his feet.

Nature has placed mankind under the governance of two sovereign masters, pain and pleasure. It is for them alone to point out what we ought to do, as well as to determine what we shall do.