Those to whom otherwise everything subtle and meditati in theoretical questions is dry and irksome will soon participa when the issue is to establish the moral impo of a good or evil action that has been recounted; and they are then so precise, so meditative, so subtle in excogitating everything that could diminish or even just make suspect the purity of the intention and hence the degree of virtue in it as one does not otherwise expect of them in the case of any object of speculation.