This posthumous publication is only a sketch of a much larger work, which he proposed should be executed. It necessarily, therefore, wants that detail and application which can alone prove the truth of any theory. A few observations will be sufficient to shew how completely the theory is contradicted when it is applied to the real, and not to an imaginary, state of things. In the last division of the work, which treats of the future progress of man towards perfection, he says, that comparing, in the different civilized nations of Europe, the actual population with the extent of territory, and observing their cultivation, their industry, their divisions of labour, and their means of subsistence, we shall see that it would be impossible to preserve the same means of subsistence, and, consequently, the same population, without a number of individuals who have no other means of supplying their wants than their industry. Having allowed the necessity of such a class of men, and adverting afterwards to the precarious revenue of those families that would depend so entirely on the life and health of their chief, he says, very justly: 'There exists then, a necessary cause of inequality, of dependence, and even of misery, which menaces, without ceasing, the most numerous and active class of our societies.' (To save time and long quotations, I shall here give the substance of some of Mr Condorcet's sentiments, and hope I shall not misrepresent them. But I refer the reader to the work itself, which will amuse, if it does not convince him.) The difficulty is just and well stated, and I am afraid that the mode by which he proposes it should be removed will be found inefficacious. By the application of calculations to the probabilities of life and the interest of money, he proposes that a fund should be established which should assure to the old an assistance, produced, in part, by their own former savings, and, in part, by the savings of individuals who in making the same sacrifice die before they reap the benefit of it. The same, or a similar fund, should give assistance to women and children who lose their husbands, or fathers, and afford a capital to those who were of an age to found a new family, sufficient for the proper development of their industry. These establishments, he observes, might be made in the name and under the protection of the society. Going still further, he says that, by the just application of calculations, means might be found of more completely preserving a state of equality, by preventing credit from being the exclusive privilege of great fortunes, and yet giving it a basis equally solid, and by rendering the progress of industry, and the activity of commerce, less dependent on great capitalists.