Water, air, and light are COMMON things, not because they are INEXHAUSTIBLE, but because they are INDISPENSABLE; and so indispensable that for that very reason Nature has created them in quantities almost infinite, in order that their plentifulness might prevent their appropriation.

Likewise the land is indispensable to our existence,--consequently a common thing, consequently insusceptible of appropriation; but land is much scarcer than the other elements, therefore its use must be regulated, not for the profit of a few, but in the interest and for the security of all.
In a word, equality of rights is proved by equality of needs.

Now, equality of rights, in the case of a commodity which is limited in amount, can be realized only by equality of possession.

An agrarian law underlies M.Ch.

Comte's arguments.
From whatever point we view this question of property--provided we go to the bottom of it--we reach equality.