an enormous proportion of property vested in a few individuals is dangerous to the rights, and destructive of the common happiness of mankind, and, therefore, every free state hath a right by its laws to discourage the possession of such property.

He that riseth late, must trot all day, and shall scarce overtake his business at night.

Lighthouses are more helpful than churches.

"We hold these truths to be sacred and undeniable" in a draft of the Declaration of Independence changes it instead into an assertion of rationality. The scientific mind of Franklin drew on the scientific determinism of Isaac Newton and the analytic empiricism of David Hume and Gottfried Leibniz. In what became known as "Hume's Fork" the latters' theory distinguished between synthetic truths that describe matters of fact, and analytic truths that are self-evident by virtue of reason and definition.

A [desire] to abolish slavery prevails in North America, many of the Pennsylvanians have set their slaves at liberty, and [Virginia legislators] have petitioned the King for permission to make a law for preventing the importation of more [slaves] into that colony. This request, however, will probably not be granted, as their former laws of that kind have always been repealed.

...it is prodigious the quantity of good that may be done by one man if he will make a business of it.

The only things of certainty are Death and Taxes.