“ANARCHISM (from the Gr. ἅν, and άρχη, contrary to authority), the name given to a principle or theory of life and conduct under which society is conceived without government — harmony in such a society being obtained, not by submission to law, or by obedience to any authority, but by free agreements concluded between the various groups, territorial and professional, freely constituted for the sake of production and consumption, as also for the satisfaction of the infinite variety of needs and aspirations of a civilized being. In a society developed on these lines, the voluntary associations which already now begin to cover all the fields of human activity would take a still greater extension so as to substitute themselves for the state in all its functions. They would represent an interwoven network, composed of an infinite variety of groups and federations of all sizes and degrees, local, regional, national and international temporary or more or less permanent — for all possible purposes: production, consumption and exchange, communications, sanitary arrangements, education, mutual protection, defence of the territory, and so on; and, on the other side, for the satisfaction of an ever-increasing number of scientific, artistic, literary and sociable needs. Moreover, such a society would represent nothing immutable. On the contrary — as is seen in organic life at large — harmony would (it is contended) result from an ever-changing adjustment and readjustment of equilibrium between the multitudes of forces and influences, and this adjustment would be the easier to obtain as none of the forces would enjoy a special protection from the state.”

Prologue
Anarchism : A History of Libertarian Ideas and Movements (1962)
Context: Proudhon goes on to suggest that the real laws by which society functions have nothing to do with authority; they are not imposed from above, but stem from the nature of society itself. He sees the free emergence of such laws as the goal of social endeavour. … Proudhon conceiving a natural law of balance operating within society, rejects authority as an enemy and not a friend of order, and throws back at the authoritarians the accusations leveled at anarchists; in the process he adopts the title he hopes to have cleared of obloquy.

The Past as Present : Forging Contemporary Identities Through History

1920s, Ordered Liberty and World Peace (1924)

Federalist No. 49 (2 February 1788)
1780s, Federalist Papers (1787–1788)

No. 33
The Federalist Papers (1787–1788)

Anarchy (1891) http://www.marxists.org/archive/malatesta/1891/xx/anarchy.htm
Context: Anarchy is a word that comes from the Greek, and signifies, strictly speaking, "without government": the state of a people without any constituted authority.
Before such an organization had begun to be considered possible and desirable by a whole class of thinkers, so as to be taken as the aim of a movement (which has now become one of the most important factors in modern social warfare), the word “anarchy” was used universally in the sense of disorder and confusion, and it is still adopted in that sense by the ignorant and by adversaries interested in distorting the truth.

Source: One-Dimensional Man (1964), p. 75

1960s, What Has Happened to America? (1967)

Allocution to Midwives on the Nature of Their Profession, October 29, 1951. http://www.ewtn.com/library/PAPALDOC/P511029.HTM http://www.papalencyclicals.net/Pius12/P12midwives.htm
Context: Besides, every human being, even the child in the womb, has the right to life directly from God and not from his parents, not from any society or human authority. Therefore, there is no man, no human authority, no science, no "indication" at all—whether it be medical, eugenic, social, economic, or moral—that may offer or give a valid judicial title for a direct deliberate disposal of an innocent human life, that is, a disposal which aims at its destruction, whether as an end in itself or as a means to achieve the end, perhaps in no way at all illicit. Thus, for example, to save the life of the mother is a very noble act; but the direct killing of the child as a means to such an end is illicit. The direct destruction of so-called "useless lives," already born or still in the womb, practiced extensively a few years ago, can in no wise be justified. Therefore, when this practice was initiated, the Church expressly declared that it was against the natural law and the divine positive law, and consequently that it was unlawful to kill, even by order of the public authorities, those who were innocent, even if on account of some physical or mental defect, they were useless to the State and a burden upon it. The life of an innocent person is sacrosanct, and any direct attempt or aggression against it is a violation of one of the fundamental laws without which secure human society is impossible. We have no need to teach you in detail the meaning and the gravity, in your profession, of this fundamental law. But never forget this: there rises above every human law and above every "indication" the faultless law of God.