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Freedom is understood as either having the ability to act or change without constraint or to possess the power and resources to fulfill one's purposes unhindered. Freedom is often associated with liberty and autonomy in the sense of "giving oneself their own laws", and with having rights and the civil liberties with which to exercise them without undue interference by the state. Frequently discussed kinds of political freedom include freedom of assembly, freedom of association, freedom of choice, and freedom of speech.
In one definition, something is "free" if it can change easily and is not constrained in its present state. In philosophy and religion, freedom is sometimes associated with having free will and being without undue or unjust constraints on that will, such as enslavement. It is an idea closely tied with the concept of Negative liberty.
Charles Taylor resolves one of the issues that separate ‘positive’ and ‘negative’ theories of freedom, as these have been initially distinguished in Isaiah Berlin's seminal essay, ‘Two concepts of liberty'. Taylor sees it as undeniable that there are two such families of conceptions of political freedom. Negative liberty is a concept that is often used in political philosophy. It is the idea that freedom means being able to do what you want, without any external obstacles. This concept has been criticized for being too simplistic and not taking into account the importance of individual self-realization. Positive liberty is the ability to fulfill one's purposes.
A person has the freedom to do things that will not, in theory or in practice, be prevented by other forces. Outside of the human realm, freedom generally does not have this political or psychological dimension. A rusty lock might be oiled so that the key has the freedom to turn, undergrowth may be hacked away to give a newly planted sapling freedom to grow, or a mathematician may study an equation having many degrees of freedom. In physics or engineering, the mathematical concept may also be applied to a body or system constrained by a set of equations, whose degrees of freedom describe the number of independent motions that are allowed to it.
The first known written reference to freedom appears during the Third Dynasty of Ur (c. 2112 BC – c. 2004 BC) as Ama-gi, in the sense of freedom from bondage or debts, and literally meant "return to mother."
In political discourse, political freedom is often associated with liberty and autonomy in the sense of "giving oneself their own laws", and with having rights and the civil liberties with which to exercise them without undue interference by the state. Frequently discussed kinds of political freedom include freedom of assembly, freedom of association, freedom of choice, and freedom of speech.
In some circumstances, particularly when discussion is limited to political freedoms, the terms "freedom" and "liberty" tend to be used interchangeably. Elsewhere, however, subtle distinctions between freedom and liberty have been noted. John Stuart Mill, differentiated liberty from freedom in that freedom is primarily, if not exclusively, the ability to do as one wills and what one has the power to do; whereas liberty concerns the absence of arbitrary restraints and takes into account the rights of all involved. As such, the exercise of liberty is subject to capability and limited by the rights of others.
Wendy Hui Kyong Chun explains the differences in terms of their relation to institutions:
"Liberty is linked to human subjectivity; freedom is not. The Declaration of Independence, for example, describes men as having liberty and the nation as being free. Free will—the quality of being free from the control of fate or necessity—may first have been attributed to human will, but Newtonian physics attributes freedom—degrees of freedom, free bodies—to objects."
"Freedom differs from liberty as control differs from discipline. Liberty, like discipline, is linked to institutions and political parties, whether liberal or libertarian; freedom is not. Although freedom can work for or against institutions, it is not bound to them—it travels through unofficial networks. To have liberty is to be liberated from something; to be free is to be self-determining, autonomous. Freedom can or cannot exist within a state of liberty: one can be liberated yet unfree, or free yet enslaved (Orlando Patterson has argued in Freedom: Freedom in the Making of Western Culture that freedom arose from the yearnings of slaves)."
Another distinction that some political theorists have deemed important is that people may aspire to have freedom from limiting forces (such as freedom from fear, freedom from want, and freedom from discrimination), but descriptions of freedom and liberty generally do not invoke having liberty from anything. To the contrary, the concept of negative liberty refers to the liberty one person may have to restrict the rights of others.
Other important fields in which freedom is an issue include economic freedom, academic freedom, intellectual freedom, scientific freedom and political freedom