Private property is that which belong to natural or s and that it is recognize under legitimately acquired and and means of production.

From this the merciful effect of private property is evident, though it is seldom recognized. It is not the cause of destructive envy, as the apostles of equality are always seeking to persuade us, but a necessary protective screen between people. Wherever there have ceased to be any enviable material goods or where these have for some reason been withdrawn from envy’s field of vision, we get the evil eye and envious, destructive hatred directed against the physical person. It might almost be said that private property first arose as a protective measure against other people’s envy of our physical qualities.

Sufficient private property in users' commodities is dependent upon the abolition of private property in primary means of production and distribution. With less private property, we may have more private property and make available plenty for everyone.

Private property has made us so stupid and one-sided that an object is only ours when we have it - when it exists for us as capital, or when it is directly possessed, eaten, drunk, worn, inhabited, etc., - in short, when it is used by us. Although private property itself again conceives all these direct realizations of possession as means of life, and the life which they serve as means is the life of private property - labour and conversion into capital. In place of all these physical and mental senses there has therefore come the sheer estrangement of all these senses – the sense of having. The human being had to be reduced to this absolute poverty in order that he might yield his inner wealth to the outer world.

Private property is a means, and neither its abolition nor its unrestricted right should be an end in itself

I absolutely insist on protecting private property. It is natural and salutary that the individual should be inspired by the wish to devote a part of the income from his work to building up and expanding a family estate. Suppose the estate consists of a factory. I regard it as axiomatic, in the ordinary way, that this factory will be better run by one of the members of the family that it would be by a State functionary—providing, of course, that the family remains healthy. In this sense, we must encourage private initiative.

La propiedad privada es aquella que pertenece a personas naturales o jurídicas y que se reconoce sobre bienes de uso y consumo y medios de producción legítimamente adquiridos.

Since the by individuals necessarily implies private property, and since competition is in reality merely the manner and form in which the control of industry by private property owners expresses itself, it follows that private property cannot be separated from competition and the individual management of industry. Private property must, therefore, be abolished and in its place must come the common utilization of all instruments of production and the distribution of all products according to common agreement – in a word, what is called the of goods.

Personal property is the effect of society; and it is as impossible for an individual to acquire personal property without the aid of society, as it is for him to make land originally. Separate na individual from society, and give him an island or a continent to possess, and he cannot acquire personal property. He cannot be rich. So inseparably are the means connected with the end, in all cases, that where the former do not exist the latter cannot be obtained. All accumulation, therefore, of personal property, beyond what a man's own hands produce, is derived to him by living in society; and he owes on every principle of justice, of gratitude, and of civilization, a part of that accumulation back again to society from whence the whole came. -Agrarian Justice

So great moreover is the regard of the law for private property, that it will not authorize the least violation of it; no, not even for the general good of the whole community. If a new road, for instance, were to be made through the grounds of a private person, it might perhaps be extensively beneficial to the public; but the law permits no man, or set of men, to do this without consent of the owner of the land. In vain may it be urged, that the good of the individual ought to yield to that of the community; for it would be dangerous to allow any private man, or even any public tribunal, to be the judge of this common good, and to decide whether it be expedient or no. Besides, the public good is in nothing more essentially interested, than in the protection of every individual's private rights, as modelled by the municipal law. In this, and similar cases the legislature alone can, and indeed frequently does, interpose, and compel the individual to acquiesce. But how does it interpose and compel? Not by absolutely stripping the subject of his property in an arbitrary manner; but by giving him a full indemnification and equivalent for the injury thereby sustained.

The general co-operation of all members of society for the purpose of planned exploitation of the forces of production, the expansion of production to the point where it will satisfy the needs of all, the abolition of a situation in which the needs of some are satisfied at the expense of the needs of others, the complete liquidation of classes and their conflicts, the rounded development of the capacities of all members of society through the elimination of the present division of labor, through industrial education, through engaging in varying activities, through the participation by all in the enjoyments produced by all, through the combination of city and country – these are the main consequences of the abolition of private property.

Private ownership, originally a means to give everybody the possibility of productive work, now has turned into the means to prevent the workers from the free use of the instruments of production. Originally a means to ascertain to the workers the fruits of their labor, it now turned into a means to deprive the workers of the fruits of their labor for the benefit of a class of useless parasites.

The critical thing, I mean, what I would keep my eye on, is private property. If the state can take away property that you owned, that you've lived on, and give it to a developer because that's good for economic development, not to mention the developer gives lots of money to the local politicians, if private property goes, then in my view there is no safeguard whatsoever, and I would always keep my eye on the relationship with government to private property.

Nobody spends somebody else’s money as carefully as he spends his own. Nobody uses somebody else’s resources as carefully as he uses his own. So if you want efficiency and effectiveness, if you want knowledge to be properly utilized, you have to do it through the means of private property.