Liberty
Overview
 
Liberty is a moral and political principle, or Right
Right
Rights are legal, social, or ethical principles of freedom or entitlement; that is, rights are the fundamental normative rules about what is allowed of people or owed to people, according to some legal system, social convention, or ethical theory...

, that identifies the condition in which human beings are able to govern themselves, to behave according to their own free will
Free will
"To make my own decisions whether I am successful or not due to uncontrollable forces" -Troy MorrisonA pragmatic definition of free willFree will is the ability of agents to make choices free from certain kinds of constraints. The existence of free will and its exact nature and definition have long...

, and take responsibility for their actions. There are different conceptions of liberty, which articulate the relationship of individuals to society in different ways, including some which relate to life under a "social contract
Social contract
The social contract is an intellectual device intended to explain the appropriate relationship between individuals and their governments. Social contract arguments assert that individuals unite into political societies by a process of mutual consent, agreeing to abide by common rules and accept...

" or to existence in a "state of nature
State of nature
State of nature is a term in political philosophy used in social contract theories to describe the hypothetical condition that preceded governments...

", and some which see the active exercise of freedom and rights as essential to liberty.

Individualist
Individualism
Individualism is the moral stance, political philosophy, ideology, or social outlook that stresses "the moral worth of the individual". Individualists promote the exercise of one's goals and desires and so value independence and self-reliance while opposing most external interference upon one's own...

 and classical liberal
Classical liberalism
Classical liberalism is the philosophy committed to the ideal of limited government, constitutionalism, rule of law, due process, and liberty of individuals including freedom of religion, speech, press, assembly, and free markets....

 conceptions of liberty typically consist of the freedom of individuals from outside compulsion or coercion
Coercion
Coercion is the practice of forcing another party to behave in an involuntary manner by use of threats or intimidation or some other form of pressure or force. In law, coercion is codified as the duress crime. Such actions are used as leverage, to force the victim to act in the desired way...

, also known as negative liberty
Negative liberty
Negative liberty is defined as freedom from interference by other people, and is set in contrast to positive liberty, which is defined as an individual's freedom from inhibitions of the social structure within the society such as classism, sexism or racism and is primarily concerned with the...

, while Social liberal
Social liberalism
Social liberalism is the belief that liberalism should include social justice. It differs from classical liberalism in that it believes the legitimate role of the state includes addressing economic and social issues such as unemployment, health care, and education while simultaneously expanding...

 conceptions of liberty emphasize social structure and agency
Structure and agency
The question over the primacy of either structure or agency in human behavior is a central debate in the social sciences. In this context, "agency" refers to the capacity of individuals to act independently and to make their own free choices. "Structure", by contrast, refers to the recurrent...

, or positive liberty
Positive liberty
Positive liberty is defined as having the power and resources to fulfill one's own potential ; as opposed to negative liberty, which is freedom from external restraint...

.

In feudal societies, a "liberty" was an area of allodial
Allodial title
Allodial title constitutes ownership of real property that is independent of any superior landlord, but it should not be confused with anarchy as the owner of allodial land is not independent of his sovereign...

 land in which the rights of the ruler, or monarch
Monarchy
A monarchy is a form of government in which the office of head of state is usually held until death or abdication and is often hereditary and includes a royal house. In some cases, the monarch is elected...

, had been waived.
Opinions on what constitute liberty can vary widely, but can be generally classified as positive liberty
Positive liberty
Positive liberty is defined as having the power and resources to fulfill one's own potential ; as opposed to negative liberty, which is freedom from external restraint...

 and negative liberty
Negative liberty
Negative liberty is defined as freedom from interference by other people, and is set in contrast to positive liberty, which is defined as an individual's freedom from inhibitions of the social structure within the society such as classism, sexism or racism and is primarily concerned with the...

.
Quotations

Our history has shown us that insecurity threatens liberty. Yet, if our liberties are curtailed, we lose the values that we are struggling to defend.

The 9/11 Commission Report by the National Commission on Terrorist Attacks Upon the United States|National Commission on Terrorist Attacks Upon the United States

Liberty, next to religion has been the motive of good deeds and the common pretext of crime...

Lord Acton, in The History of Freedom in Antiquity (1877)

By liberty I mean the assurance that every man shall be protected in doing what he believes his duty against the influence of authority and majorities, custom and opinion.

Lord Acton, in The History of Freedom in Antiquity (1877)

Liberty and good government do not exclude each other; and there are excellent reasons why they should go together. Liberty is not a means to a higher political end. It is itself the highest political end.

Lord Acton, in The History of Freedom in Antiquity (1877)

If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen.

Samuel Adams, in a speech at the Philadelphia State House (1 August 1776)

Ever since I arrived to a state of manhood, I have felt a sincere passion for liberty.

Ethan Allen, as quoted in "In the name of the Great Jehovah and the Continental Congress!" - American Heritage magazine Vol. 14, Issue 6 (October 1963)

Experience should teach us to be most on our guard to protect liberty when the Government's purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well meaning but without understanding.

Louis Brandeis, in Olmstead v. United States|Olmstead v. United States (1928)

Whenever a separation is made between liberty and justice, neither, in my opinion, is safe.

Edmund Burke, in a letter to M. de Menonville (October 1789)

It is the common fate of the indolent to see their rights become a prey to the active. The condition upon which God hath given liberty to man is eternal vigilance; which condition if he break, servitude is at once the consequence of his crime and the punishment of his guilt.

John Philpot Curran|John Philpot Curran, "Speech On the Right of Election" (1790) in Speeches of John Philpot Curran (1811)

 
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