From: The Old Guys
Such is man’s nature, that he is very inactive, any otherwise than he is influenced by some affection, either love or hatred, desire, hope, fear, or some other. These affections we see to be the springs that set men agoing, in all the affairs of life, and engage them in all their pursuits: these are the things that put men forward, and carry them along, in all their worldly business; and especially are men excited and animated by these, in all affairs wherein they are earnestly engaged, and which they pursue with vigor. We see the world of mankind to be exceeding busy and active; and the affections of men are the springs of the motion: take away all love and hatred, all hope and fear, all anger, zeal, and affectionate desire, and the world would be, in a great measure motionless and dead; there would be no such thing as activity amongst mankind, or any earnest pursuit whatsoever. It is affection that engages the covetous man, and him that is greedy of worldly profits, in his pursuits; and it is by the affections, that the ambitious man is put forward in pursuit of worldly glory; and it is the affections also that actuate the voluptuous man, in his pursuit of pleasure and sensual delights: the world continues, from age to age, in a continual commotion and agitation, in a pursuit of these things, but take away all affection, and the spring of all this motion would be gone, and the motion itself would cease. And as in worldly things, worldly affections are very much the spring of men’s motion and action; so in religious matters, the spring of their actions is very much religious affection: he that has doctrinal knowledge and speculation only, without affection, never is engaged in the business of religion.
The Works of Jonathan Edwards (Peabody, Massachusetts; Hendrickson Publishers; 2007) p. 238.