text: " There is however a natural indolence of our disposition which seeks pleasure in repose and the resting in old habits which must not be too violently opposed by "variety " "reanimating the attention which is apt to languish under a continual sameness;" nor by "novelty " making "more forcible impression on the mind than can be made by the representation of what we have often seen before;" nor by "contrasts " that "rouse the power of comparison by opposition