“If a human being is isolated from other humans for a month or more, and is confined to a small area geographically and a small range of activities, his interest in his surroundings and its minutiae increase radically…. Further, if a confined, isolated human is allowed brief contacts with other humans even without a shared language, he begins to find their presence comforting, and a pleasant relief from the "evenness" of his surroundings. If these humans controls his only sources of food as well as his sources of intraspecies stimulation, he mat adapt to their demands in subtle and not so subtle ways. He may, given time, learn their language, take on their beliefs, etc. When we catch a dolphin and put him alone in a small tank, we are imposing similar "solitary confinement" structures on him. Maybe we can thus capture his loyalty and his initiative.”

Christian Personalism's Place in Bioethics https://zenit.org/2004/07/06/christian-personalism-s-place-in-bioethics/ (6 July 2004)

Source: I and Thou

Credo (1965)
Context: I believe that if an individual is not on the path to transcending his society and seeing in what way it furthers or impedes the development of human potential, he cannot enter into intimate contact with his humanity. If the tabus, restrictions, distorted values appear "natural" to him, this is a clear indication that he cannot have a real knowledge of human nature.
I believe that society, while having a function both stimulating and inhibiting at the same time, has always been in conflict with humanity. Only when the purpose of society is identified with that of humanity will society cease to paralyze man and encourage his dominance.

Variant translations:
A natural society, in the midst of which every man is born and outside of which he could never become a rational and free being, becomes humanized only in the measure that all men comprising it become, individually and collectively, free to an ever greater extent.
Note 1. To be personally free means for every man living in a social milieu not to surrender his thought or will to any authority but his own reason and his own understanding of justice; in a word, not to recognize any other truth but the one which he himself has arrived at, and not to submit to any other law but the one accepted by his own conscience. Such is the indispensable condition for the observance of human dignity, the incontestable right of man, the sign of his humanity.
To be free collectively means to live among free people and to be free by virtue of their freedom. As we have already pointed out, man cannot become a rational being, possessing a rational will, (and consequently he could not achieve individual freedom) apart from society and without its aid. Thus the freedom of everyone is the result of universal solidarity. But if we recognize this solidarity as the basis and condition of every individual freedom, it becomes evident that a man living among slaves, even in the capacity of their master, will necessarily become the slave of that state of slavery, and that only by emancipating himself from such slavery will he become free himself.
Thus, too, the freedom of all is essential to my freedom. And it follows that it would be fallacious to maintain that the freedom of all constitutes a limit for and a limitation upon my freedom, for that would be tantamount to the denial of such freedom. On the contrary, universal freedom represents the necessary affirmation and boundless expansion of individual freedom.
This passage was translated as Part III : The System of Anarchism , Ch. 13: Summation, Section VI, in The Political Philosophy of Bakunin : Scientific Anarchism (1953), compiled and edited by G. P. Maximoff
Man does not become man, nor does he achieve awareness or realization of his humanity, other than in society and in the collective movement of the whole society; he only shakes off the yoke of internal nature through collective or social labor... and without his material emancipation there can be no intellectual or moral emancipation for anyone... man in isolation can have no awareness of his liberty. Being free for man means being acknowledged, considered and treated as such by another man, and by all the men around him. Liberty is therefore a feature not of isolation but of interaction, not of exclusion but rather of connection... I myself am human and free only to the extent that I acknowledge the humanity and liberty of all my fellows... I am properly free when all the men and women about me are equally free. Far from being a limitation or a denial of my liberty, the liberty of another is its necessary condition and confirmation.
Man, Society, and Freedom (1871)
Context: The materialistic, realistic, and collectivist conception of freedom, as opposed to the idealistic, is this: Man becomes conscious of himself and his humanity only in society and only by the collective action of the whole society. He frees himself from the yoke of external nature only by collective and social labor, which alone can transform the earth into an abode favorable to the development of humanity. Without such material emancipation the intellectual and moral emancipation of the individual is impossible. He can emancipate himself from the yoke of his own nature, i. e. subordinate his instincts and the movements of his body to the conscious direction of his mind, the development of which is fostered only by education and training. But education and training are preeminently and exclusively social … hence the isolated individual cannot possibly become conscious of his freedom.
To be free … means to be acknowledged and treated as such by all his fellowmen. The liberty of every individual is only the reflection of his own humanity, or his human right through the conscience of all free men, his brothers and his equals.
I can feel free only in the presence of and in relationship with other men. In the presence of an inferior species of animal I am neither free nor a man, because this animal is incapable of conceiving and consequently recognizing my humanity. I am not myself free or human until or unless I recognize the freedom and humanity of all my fellowmen.
Only in respecting their human character do I respect my own....
I am truly free only when all human beings, men and women, are equally free. The freedom of other men, far from negating or limiting my freedom, is, on the contrary, its necessary premise and confirmation.

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.

Source: Principles of industrial organization, 1913, p. 47

Source: The Evolution of Civilizations (1961) (Second Edition 1979), Chapter 2, Man and Culture, p. 55

Partly cited in: Jean-Marc Choukroun, Roberta Snow (1992) Planning for human systems: essays in honor of Russell L. Ackoff. p. 287.
1950s, The development of operations research as a science, 1956