It is self-evident, since property is always accompanied (either actually or potentially) by the fact which this axiom expresses; and through this fact, mainly, property manifests, establishes, and asserts itself.
4.

Finally, its negation involves a contradiction.

The right of increase is really an inherent right, so essential a part of property, that, in its absence, property is null and void.
OBSERVATIONS .-- Increase receives different names according to the thing by which it is yielded: if by land, FARM-RENT; if by houses and furniture, RENT; if by life-investments, REVENUE; if by money, INTEREST; if by exchange, ADVANTAGE, GAIN, PROFIT (three things which must not be confounded with the wages or legitimate price of labor).
Increase--a sort of royal prerogative, of tangible and consumable homage--is due to the proprietor on account of his nominal and metaphysical occupancy.

His seal is set upon the thing; that is enough to prevent any one else from occupying it without HIS permission.
This permission to use his things the proprietor may, if he chooses, freely grant.

Commonly he sells it.