Whilst we thus, with so much accuracy, can assign the ideal limits that may distinguish constitutions of government, we find them, in reality, both in respect to the principle and the form, variously blended together. In what society are not men classed by external distinctions, as well as personal qualities? In what state are they not actuated by a variety of principles; justice, honour, moderation, and fear? It is the purpose of science not to disguise this confusion in its object, but, in the multiplicity and combination of particulars, to find the principal points which deserve our attention; and which, being well understood, save us from the embarrassment which the varieties of singular cases might otherwise create. In the same degree in which governments require men to act from principles of virtue, of honour, or of fear, they are more or less fully comprised under the heads of republic, monarchy, or despotism, and the general theory is more or less applicable to their particular case. Forms of government, in fact, mutually approach or recede by many, and often insensible gradations. Democracy, by admitting certain inequalities of rank, approaches to aristocracy. In popular, as well as aristocratical governments, particular men; by their personal authority, and sometimes by the credit of their family, have maintained a species of monarchical power. The monarch is limited in different degrees: even the despotic prince is only that monarch whose subjects claim the fewest privileges, or who is himself best prepared to subdue them by force. All these varieties are but steps in the history of mankind, and, mark the fleeting and transient situations through which they have passed; while supported by virtue, or depressed by vice. Perfect democracy and despotism appear to be the opposite extremes at which constitutions of government farthest recede from each other. Under the first, a perfect virtue is required; under the second, a total corruption is supposed: yet, in point of mere form, there being nothing fixed in the ranks and distinctions of men beyond the casual and temporary possession of power, societies easily pass from a condition in which every individual has an equal title to reign, into one in which they are equally destined to serve. The same qualities in both, courage, popularity, address, and military conduct, raise the ambitious to eminence. With these qualities, the citizen or the slave easily passes from the ranks to the command of an army, from an obscure to an illustrious station. In either, a single person may rule with unlimited sway; and in both, the populace may break down every barrier of order, and restraint of law.