Nothing appears more surprising to those, who consider human affairs with a philosophical eye, than the easiness with which the many are governed by the few; and the implicit submission, with which men resign their own sentiments and passions to those of their rulers. When we enquire by what means this wonder is effected, we shall find, that, as FORCE is always on the side of the governed, the governors have nothing to support them but opinion. It is therefore, on opinion only that government is founded; and this maxim extends to the most despotic and military governments, as well as to the most free and most popular.
Source: Of the First Principles of Government (1741)
[link] #58It is seldom that liberty of any kind is lost all at once. Slavery has so frightful an aspect to men accustomed to freedom that it must steal in upon them by degrees and must disguise itself in a thousand shapes in order to be received.
Source: Of the Liberty of the Press (1742)
[link] #83The face of the earth is continually changing, by the increase of small kingdoms into great empires, by the dissolution of great empires into smaller kingdoms, by the planting of colonies, by the migration of tribes. Is there anything discoverable in all these events but force and violence? Where is the mutual agreement or voluntary association so much talked of?
Source: Of the Original Contract (1748)
[link] #374Should it be said, that, by living under the dominion of a prince, which one might leave, every individual has given a tacit consent to his authority, and promised him obedience; it may be answered, that such an implied consent can only have place, where a man imagines, that the matter depends on his choice. But where he thinks (as all mankind do who are born under established governments) that by his birth he owes allegiance to a certain prince or certain form of government; it would be absurd to infer a consent or choice, which he expressly, in this case, renounces and disclaims. Can we seriously say, that a poor peasant or artizan has a free choice to leave his country, when he knows no foreign language or manners, and lives from day to day, by the small wages which he acquires? We may as well assert, that a man, by remaining in a vessel, freely consents to the dominion of the master; though he was carried on board while asleep, and must leap into the ocean, and perish, the moment he leaves her.
Source: Of the Original Contract (1748)
[link] #431About David Hume

Generally regarded as one of the most important philosophers to write in English, David Hume (1711–1776) was also well known in his own time as an historian and essayist. A master stylist in any genre, his major philosophical works—A Treatise of Human Nature (1739–1740), the Enquiries concerning Human Understanding (1748) and concerning the Principles of Morals (1751), as well as his posthumously published Dialogues concerning Natural Religion (1779)—remain widely and deeply influential.
Although Hume’s more conservative contemporaries denounced his writings as works of scepticism and atheism, his influence is evident in the moral philosophy and economic writings of his close friend Adam Smith. Kant reported that Hume’s work woke him from his "dogmatic slumbers" and Jeremy Bentham remarked that reading Hume "caused the scales to fall" from his eyes. Charles Darwin regarded his work as a central influence on the theory of evolution. The diverse directions in which these writers took what they gleaned from reading him reflect both the richness of their sources and the wide range of his empiricism. Today, philosophers recognize Hume as a thoroughgoing exponent of philosophical naturalism, as a precursor of contemporary cognitive science, and as the inspiration for several of the most significant types of ethical theory developed in contemporary moral philosophy.
Additional Resources
David Hume - Wikipedia