Supreme happiness will be the greatest cause of misery, and the perfection of wisdom the occassion of folly.

The vine that has grown old on an old tree falls with the ruin of that tree, and through that bad companionship must perish with it.

Nature is constrained by the cause of her laws which dwell inborn in her. Variant: Nature is constrained by the order of her own law which lives and works within her.

Fire destroys falsehood, that is sophistry, and restores truth, driving out darkness.

To speak well of a base man is much the same as speaking ill of a good man.

Good writing comes from good talent.

The Book of the science of Mechanics must precede the Book of useful inventions.