motion or state, either of body or mind, in which Nature teaches us to delight, a pleasure. Thus they cautiously limit pleasure only to those appetites to which Nature leads us; for they say that Nature leads us only to those delights to which reason, as well as sense, carries us, and by which we neither injure any other person nor lose the possession of greater pleasures, and of such as draw no troubles after them.

But they look upon those delights which men by a foolish, though common, mistake call pleasure, as if they could change as easily the nature of things as the use of words, as things that greatly obstruct their real happiness, instead of advancing it, because they so entirely possess the minds of those that are once captivated by them with a false notion of pleasure that there is no room left for pleasures of a truer or purer kind.