The riches of a country are to be valued by the quantity of labor its inhabitants are able to purchase, and not by the quantity of silver and gold they possess; which will purchase more or less labor, and therefore is more or less valuable, as is said before, according to its scarcity or plenty.

Wouldst thou enjoy a long Life, a healthy Body, and a vigorous Mind, and be acquainted also with the wonderful Works of God? labour in the first place to bring thy Appetite into Subjection to Reason.

In success be moderate.

We constantly change the world, even by our inaction. Therefore, let us change it responsibly.

Some are weatherwise, some are otherwise.

You will observe with concern how long a useful truth may be known, and exist, before it is generally received and practiced on.

No employment can be managed without arithmetic, no mechanical invention without geometry.