That is, if nature, or the inanimate system (on which God hath imposed his laws, which it obeys, as a machine obeys the hand of the workman), may in course of time deviate from its first direction, as the best philosophy shows it may; where is the wonder that man, who was created a free agent, and hath it in his power every moment to transgress the eternal rule of right, should sometimes go out of order?
Ver. 151. As much that end, &c.] Having thus shown how moral evil came into the world, namely, by man's abuse of his own free-will, our poet comes to the point, the confirmation of his thesis, by showing how moral evil promotes good; and employs the same concessions of his adversaries, concerning natural evil, to illustrate it.
1. He shows it tends to the good of the whole, or universe, from ver. 151 to 164, and this by analogy. You own, says he, that storms and tempests, clouds, rain, heat, and variety of seasons, are necessary (notwithstanding the accidental evil they bring with them) to the health and plenty of this globe; why then should you suppose there is not the same use, with regard to the universe, in a Borgia or a Catiline? But you say you can see the one, and not the other. You say right: one terminates in this system, the other refers to the whole: which whole can be comprehended by none but the great Author himself. For, says the poet in another place,
Of this frame, the bearings and the ties,
The strong connexions, nice dependencies,
Gradations just, has thy pervading soul
Look'd through? or can a part contain the whole?
Own therefore, says he, that
From pride, from pride, our very reas'ning springs;
Account for moral, as for nat'ral things:
Why charge we heav'n in those, in these acquit?
In both, to reason right, is to submit.
Ver. 165. Better for us, &c.] But, secondly, to strengthen the foregoing analogical argument, and to make the wisdom and goodness of God still more apparent, he observes, from ver. 165 to 172, that moral evil is not only productive of good to the whole, but is even productive of good in our own system. It might, says he, perhaps appear better to us, that there were nothing in this world but peace and virtue;
That never air or ocean felt the wind;
That never passion discomposed the mind.
But then consider, that as our material system is supported by the strife of its elementary particles, so is our intellectual system, by the conflict of our passions, which are the elements of human action. In a word, as without the benefit of tempestuous winds, both air and ocean would stagnate, corrupt, and spread universal contagion throughout all the ranks of animals that inhabit, or are supported by, them; so, without the benefit of the passions, such virtue as was merely the effect of the absence of those passions, would be a lifeless calm, a stoical apathy.
Contracted all, retiring to the breast:
But health of mind is exercise, not rest.