  At v.16, Marcus says that one’s mind will be of the same character as the impressions it has. This seems unfair, if impressions are entirely involuntary. Marcus may think that while involuntary in the moment, impressions are subject to control in the long run. Perhaps if I keep refusing to assent to my present impression that wealth is good, wealth will eventually cease to appear to me as good. It is also not implausible that one’s character and opinion would influence one’s impressions, especially in the case of evaluative impressions (such as that x is good or to-be-preferred) and impressions that requires some expertise to have (such as that y is the treadle for a foot loom).