‘These two laws,’ he adds, ‘ever since we have had any knowledge of mankind, appear to have been fixed laws of our nature; and as we have not hitherto seen any alteration in them, we have no right to conclude that they will ever cease to be what they are now, without an immediate act of power in that Being who first arranged the system of the universe. The best arguments for the perfectibility of man are drawn from a contemplation of the great progress that he has already made from the savage state, and the difficulty of saying where he is to stop. But towards the extinction of the passion between the sexes, no progress whatever has hitherto been made. It appears to exist in as much force at present as it did two thousand, or four thousand years ago. There are individual exceptions now as there always have been. But, as these exceptions do not appear to increase in number, it would surely be a very unphilosophical mode of arguing to infer merely from the existence of an exception, that the exception would in time become the rule, and the rule the exception.’ As to the first position here laid down that food is necessary to the existence of man, I shall not certainly dispute it. As to the second kind of necessity, the gratification of the passion between the sexes, I must beg leave to deny that this necessity is ‘like unto the first’ or to be compared with it. Does Mr. Malthus really mean to say that a man can no more abstain from the commerce of women, than he can live without food? If so, he states what is not the fact. Does he mean to assert, that the impulse to propagate the species, call it lust, or love, is a principle as strong, as ungovernable, as importunate, as uniform in its effects, as incapable of being subjected to the control of reason, or circumstances, in short as much an affair of mere physical appetite, as hunger? One would suppose so, for he makes no distinction between them, but speaks of them both in the same terms, as equally _necessary_, as equally fixed, and immutable laws of our nature, the operation of which nothing short of a miracle can suspend or alter. There are two circumstances, the mentioning of which will however be sufficient to shew that the two kinds of necessity here spoken of are not of the same order, or cogency, and cannot be reasoned upon in the same manner, namely, that there are many instances of persons who have lived all their lives without any intercourse with the other sex, whereas there is no instance of any person living without food; in the second place, what makes a most marked distinction between the two cases, is that the longer we have been accustomed to do without the indulgence of the one appetite, the more tractable we find it, whereas the craving occasioned by the want of food, the longer it continues, becomes more and more pressing, and at last utterly ungovernable, and if not satisfied in time, is sure in all cases whatever, without a single exception, to destroy the person’s life.