Key Arguments

• He explicitly states: 'Property is impossible, because it is the Negation of equality,' presenting impossibility as grounded in the incompatibility of property with equality.
• He frames the 'development of this proposition' as 'the résumé of the preceding ones,' indicating that each earlier economic, juridical, and political critique—about interest, surplus extraction, pauperism, political inequality, etc.—collectively shows property to be structurally anti‑egalitarian.
• By listing, in numbered order, various 'principle[s] of economical justice,' 'economical law[s],' and facts about labor, consumption, and rights, he shows that in each domain property violates an underlying relation of equality (between products, labor and product, cause and effect, votes and persons, right and object), so property as such is the systematic negation of equality.

Source Quotes

Tenth Proposition Property is impossible, because it is the Negation of equality. The development of this proposition will be the résumé of the preceding ones.

Tenth Proposition Property is impossible, because it is the Negation of equality. The development of this proposition will be the résumé of the preceding ones. 1.

Key Concepts

• Tenth Proposition Property is impossible, because it is the Negation of equality.
• The development of this proposition will be the résumé of the preceding ones.

Context

Opening of the Tenth Proposition in Chapter IV, where Proudhon introduces his final 'impossibility' thesis about property and announces that he will summarize the previous propositions as a unified argument that property contradicts equality in all relevant spheres.