God knows that all sorts of gentlemen knock at the door; but whenever used in strictness and with any emphasis, the name will be found to point at original energy.

Of cheerfulness, or a good temper - the more it is spent, the more of it remains.

The human body is a magazine of inventions, the patent office, where are the models from which every hint is taken. All the tools and engines on earth are only extensions of its limbs and senses.

Some men love only to talk where they are masters. They like to go to school-girls, or to boys, or into the shops where the sauntering people gladly lend an ear.

Eloquence must be grounded on the plainest narrative.

When science is learned in love, and its powers are wielded by love, they will appear the supplements and continuations of the material creation.

Human beings cannot endure the geological chaos they encounter under the soil of their own gardens.