In various places throughout these lectures I have had to allude to the distinction between productive and unproductive labour, and between true and false wealth. I shall here endeavour, as clearly as I can, to explain the distinction I mean. Property may be divided generally into two kinds; that which produces life, and that which produces the objects of life. That which produces or maintains life consists of food, in so far as it is nourishing; of furniture and clothing, in so far as they are protective or cherishing; of fuel; and of all land, instruments, or materials, necessary to produce food, houses, clothes and fuel. It is specially and rightly called useful property. The property which produces the objects of life consists of all that gives pleasure or suggests and preserves thought: of food, furniture, and land, in so far as they are pleasing to the appetite or the eye, of luxurious dress; and all other kinds of luxuries; of books, pictures, and architecture. But the modes of connection of certain minor forms of property with human labour render it desirable to arrange them under more than these two heads. Property may therefore be conveniently considered as of five kinds. 1st. Property necessary to life, but not producible by labour, and therefore belonging of right, in a due measure, to every human being as soon as he is born, and morally unalienable. As, for instance, his proper share of the atmosphere, without which he cannot breathe, and of water, which he needs to quench his thirst. As much land as he needs to feed from is also inalienable; but in well regulated communities this quantity of land may often be represented by other possessions, or its need supplied by wages and privileges.