Be a philosopher, but amid all your philosophy be still a man. - David Hume

All knowledge degenerates into probability.

We must therefore glean up our experiments in this science from a cautious observation of human life, and take them as they appear in the common course of the world, by men's behaviour in company, in affairs, and in their pleasures. Where experiments of this kind are judiciously collected and compared, we may hope to establish on them a science, which will not be inferior in certainty, and will be much superior in utility to any other of human comprehension.

It is observable, that, as the old ROMANS, by applying themselves solely to war, were almost the only uncivilized people that ever possessed military discipline; so the modern ITALIANS are the only civilized people, among EUROPEANS, that ever wanted courage and a martial spirit. Those who would ascribe this effeminacy of the ITALIANS to their luxury, or politeness, or application to the arts, need but consider the FRENCH and ENGLISH, whose bravery is as uncontestable, as their love for the arts, and their assiduity in commerce. The ITALIAN historians give us a more satisfactory reason for this degeneracy of their countrymen. They shew us how the sword was dropped at once by all the ITALIAN sovereigns; while the VENETIAN aristocracy was jealous of its subjects, the FLORENTINE democracy applied itself entirely to commerce; ROME was governed by priests, and NAPLES by women. War then became the business of soldiers of fortune, who spared one another, and to the astonishment of the world, could engage a whole day in what they called a battle, and return at night to their camp, without the least bloodshed.