To strip sensual pleasures of all their adjuncts, in order to prove their inferiority, is to deprive a magnet of some of its most essential causes of attraction, and then to say that it is weak and inefficient.
In the pursuit of every enjoyment, whether sensual or intellectual, reason, that faculty which enables us to calculate consequences, is the proper corrective and guide.

It is probable therefore that improved reason will always tend to prevent the abuse of sensual pleasures, though it by no means follows that it will extinguish them.
I have endeavoured to expose the fallacy of that argument which infers an unlimited progress from a partial improvement, the limits of which cannot be exactly ascertained.

It has appeared, I think, that there are many instances in which a decided progress has been observed, where yet it would be a gross absurdity to suppose that progress indefinite.

But towards the extinction of the passion between the sexes, no observable progress whatever has hitherto been made.

To suppose such an extinction, therefore, is merely to offer an unfounded conjecture, unsupported by any philosophical probabilities.
It is a truth, which history I am afraid makes too clear, that some men of the highest mental powers have been addicted not only to a moderate, but even to an immoderate indulgence in the pleasures of sensual love.
But allowing, as I should be inclined to do, notwithstanding numerous instances to the contrary, that great intellectual exertions tend to diminish the empire of this passion over man, it is evident that the mass of mankind must be improved more highly than the brightest ornaments of the species at present before any difference can take place sufficient sensibly to affect population.