There appears to be something analogous in the mind. The senses and the imagination give a form to the character, during childhood and youth; and the understanding, as life advances, gives firmness to the first fair purposes of sensibility -- till virtue, arising rather from the clear conviction of reason than the impulse of the heart, morality is made to rest on a rock against which the storms of passion vainly beat.
I hope I shall not be misunderstood when I say, that religion will not have this condensing energy, unless it be founded on reason. If it be merely the refuge of weakness or wild fanaticism, and not a governing principle of conduct, drawn from self-knowledge, and a rational opinion respecting the attributes of God, what can it be expected to produce? The religion which consists in warming the affections, and exalting the imagination, is only the poetical part, and may afford the individual pleasure without rendering it a more moral being. It may be a substitute for worldly pursuits; yet narrow, instead of enlarging the heart: but virtue must be loved as in itself sublime and excellent, and not for the advantages it procures or the evils it averts, if any great degree of excellence be expected. Men will not become moral when they only build airy castles in a future world to compensate for the disappointments which they meet with in this; if they turn their thoughts from relative duties to religious reveries.