Lighthouses are more helpful than churches.

Wherever desirable superfluities are imported, industry is excited, and thereby plenty is produced. Were only necessaries permitted to be purchased, men would work no more than was necessary for that purpose.

Use no hurtful deceit; think innocently and justly and, if you speak, speak accordingly.

The greatest inventions are those inquiries which tend to increase the power of man over matter.

The electrical matter consists of particles extremely subtile, since it can permeate common matter, even the densest metals, with such ease and freedom as not to receive any perceptible resistance.

When the well is dry, people know the worth of water. [so appreciate what you have while you have it]

Promises may get thee friends, but non-performance will turn them into enemies.