Wesley Corpus

4. Hence, even those thoughts which are occasioned by weakness or disease, by the natural mechanism of the body, or by the laws of vital union, however innocent they may be in themselves, do nevertheless become sinful, when they either produce or cherish and increase in us any sinful temper; suppose the desire of the flesh, the desire of the eye, or the pride of life. In like manner, the wandering thoughts which are occasioned by the words or actions of other men, if they cause or feed any wrong disposition, then commence sinful. And the same we may observe of those which are suggested or injected by the devil. When they minister to any earthly or devilish temper, (which they do, whenever we give place to them, and thereby make them our own,) then they are equally sinful with the tempers to which they minister. 5. But, abstracting from these cases, wandering thoughts, in the latter sense of the word, that is, thoughts wherein our understanding wanders from the point it has in view, are no more sinful than the motion of the blood in our veins, or of the spirits in our brain. If they arise from an infirm constitution, or from some accidental weakness or distemper, they are as innocent as it is to have a weak constitution or a distempered body. And surely no one doubts but a bad state of nerves, a fever of any kind, and either a transient or a lasting delirium, may consist with perfect innocence. And if they should arise in a soul which is united to a healthful body, either from the natural union between the body and soul, or from any of ten thousand changes which may occur in those organs of the body that minister to thought; -- in any of these cases they are as perfectly innocent as the causes from which they spring. And so they are when they spring from the casual, involuntary associations of our ideas.