Friendship is precious in the hearts of the children of men. Generosity, gratitude (I mean here only that gratitude which is born of admiration of a … - Pierre-Joseph Proudhon

For me, the response is simple. All ideas are false, that is to say contradictory and irrational, if one takes them in an exclusive and absolute sense, or if one allows oneself to be carried away by that sense; all are true, susceptible to realization and use, if one takes them together with others, or in evolution.

1. Sovereignty of the human will; in short, despotism. 2. Inequality of wealth and rank. 3. Property — above JUSTICE, always invoked as the guardian angel of sovereigns, nobles, and proprietors; JUSTICE, the general, primitive, categorical law of all society.
We must ascertain whether the ideas of despotism, civil inequality and property, are in harmony with the primitive notion of justice, and necessarily follow from it, — assuming various forms according to the condition, position, and relation of persons; or whether they are not rather the illegitimate result of a confusion of different things, a fatal association of ideas. And since justice deals especially with the questions of government, the condition of persons, and the possession of things, we must ascertain under what conditions, judging by universal opinion and the progress of the human mind, government is just, the condition of citizens is just, and the possession of things is just; then, striking out every thing which fails to meet these conditions, the result will at once tell us what legitimate government is, what the legitimate condition of citizens is, and what the legitimate possession of things is; and finally, as the last result of the analysis, what justice is.

We are told of the time when, with the same beliefs, with the same institutions, all the world seemed happy: why complain of these beliefs; why banish these institutions? We are slow to admit that that happy age served the precise purpose of developing the principle of evil which lay dormant in society; we accuse men and gods, the powers of earth and the forces of Nature. Instead of seeking the cause of the evil in his mind and heart, man blames his masters, his rivals, his neighbors, and himself; nations arm themselves, and slay and exterminate each other, until equilibrium is restored by the vast depopulation, and peace again arises from the ashes of the combatants. So loath is humanity to touch the customs of its ancestors, and to change the laws framed by the founders of communities, and confirmed by the faithful observance of the ages.