Mr Wallace--Error of supposing that the difficulty arising from population is at a great distance--Mr Condorcet's sketch of the progress of the human mind--Period when the oscillation, mentioned by Mr Condorcet, ought to be applied to the human race. To a person who draws the preceding obvious inferences, from a view of the past and present state of mankind, it cannot but be a matter of astonishment that all the writers on the perfectibility of man and of society who have noticed the argument of an overcharged population, treat it always very slightly and invariably represent the difficulties arising from it as at a great and almost immeasurable distance. Even Mr Wallace, who thought the argument itself of so much weight as to destroy his whole system of equality, did not seem to be aware that any difficulty would occur from this cause till the whole earth had been cultivated like a garden and was incapable of any further increase of produce. Were this really the case, and were a beautiful system of equality in other respects practicable, I cannot think that our ardour in the pursuit of such a scheme ought to be damped by the contemplation of so remote a difficulty. An event at such a distance might fairly be left to providence, but the truth is that if the view of the argument given in this Essay be just the difficulty, so far from being remote, would be imminent and immediate. At every period during the progress of cultivation, from the present moment to the time when the whole earth was become like a garden, the distress for want of food would be constantly pressing on all mankind, if they were equal. Though the produce of the earth might be increasing every year, population would be increasing much faster, and the redundancy must necessarily be repressed by the periodical or constant action of misery or vice. Mr Condorcet's Esquisse d'un Tableau Historique des Progres de l'Esprit Humain, was written, it is said, under the pressure of that cruel proscription which terminated in his death. If he had no hopes of its being seen during his life and of its interesting France in his favour, it is a singular instance of the attachment of a man to principles, which every day's experience was so fatally for himself contradicting. To see the human mind in one of the most enlightened nations of the world, and after a lapse of some thousand years, debased by such a fermentation of disgusting passions, of fear, cruelty, malice, revenge, ambition, madness, and folly as would have disgraced the most savage nation in the most barbarous age must have been such a tremendous shock to his ideas of the necessary and inevitable progress of the human mind that nothing but the firmest conviction of the truth of his principles, in spite of all appearances, could have withstood.