Self-respect is the cornerstone of all virtue.

Occurrences which according to received theories ought not to happen, are the facts which serve as clues to new discoveries

The stars are the land-marks of the universe.

To the natural philosopher, there is no natural object unimportant or trifling. From the least of Nature's works he may learn the greatest lessons.

There is a pinciple in the heart of music which has yet to be discovered.

Geology, in the magnitude and sublimity of the objects of which it treats, undoubtedly ranks, in the scale of the sciences, next to astronomy.

Self-respect is the cornerstone of all virtue.