Happy is the hearing man; unhappy the speaking man.

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.

The vulgar call good fortune that which really is produced by the calculations of genius.

Trust your instinct to the end, though you can render no reason.

Works of the intellect are great only by comparison with each other.

In all conversation between two persons, tacit reference is made, as to a third party, to a common nature. That third party or common nature is not social; it is impersonal; is God.

As we are, so we do; and as we do, so is it done to us; we are the builders of our fortunes.