Bolingbroke, Shaftesbury, and Pope, their working artisan, resolve their general question no better than the rest. Their "all for the best" says no more than that all is governed by immutable laws; and who did not know that? We learn nothing when we remark, after the manner of little children, that flies are created to be eaten by spiders, spiders by swallows, swallows by hawks, hawks by eagles, eagles by men, men by one another, to afford food for worms; and at last, at the rate of about a thousand to one, to be the prey of devils everlastingly.
There is a constant and regular order established among animals of all kinds--a universal order. When a stone is formed in my bladder, the mechanical process is admirable; sandy particles pass by small degrees into my blood; they are filtered by the veins; and passing the urethra, deposit themselves in my bladder; where, uniting agreeably to the Newtonian attraction, a stone is formed, which gradually increases, and I suffer pains a thousand times worse than death by the finest arrangement in the world. A surgeon, perfect in the art of Tubal-Cain, thrusts into me a sharp instrument; and cutting into the perineum, seizes the stone with his pincers, which breaks during the endeavors, by the necessary laws of mechanism; and owing to the same mechanism, I die in frightful torments. All this is "for the best", being the evident result of unalterable physical principles, agreeably to which I know as well as you that I perish.
If we were insensitive, there would be nothing to say against this system of physics; but this is not the point on which we treat. We ask if there are not physical evils, and whence do they originate? There is no absolute evil, says Pope in his "Essay on Man"; or if there are particular evils, they compose a general good. It is a singular general good which is composed of the stone and the gout--of all sorts of crime and sufferings, and of death and damnation.
The fall of man is our plaister for all these particular maladies of body and soul, which you call "the general health"; but Shaftesbury and Bolingbroke have attacked original sin. Pope says nothing about it; but it is clear that their system saps the foundations of the Christian religion, and explains nothing at all.