4. The supporters of innate principles are unable to point out distinctly what they are.[18] Yet, if these were imprinted on the mind, there could be no more doubt about them than about the number of our fingers. We well know that, if men of different sects were to write out their respective lists, they would set down exactly such as suited their several schools or churches. There is, Locke remarks, a ready, but not very material, answer to his objections, namely, that the innate principles may, by Education and Custom, be darkened and worn out of men's minds. But this takes away at once the argument from universal consent, and leaves nothing but what each party thinks should pass for universal consent, namely, their own private persuasion: a method whereby a set of men presuming themselves to be the only masters of right reason, put aside the votes and opinions of the rest of mankind. Thus, notwithstanding the innate light, we are as much in the dark as if it did not exist; a rule that will warp any way is not to be distinguished amidst its contraries. If these rules are so liable to vary, through adventitious notions, we should find them clearest in children and in persons wholly illiterate. He grants that there are many opinions, received by men of different countries, educations, and tempers, and held as unquestionable first principles; but then the absurdity of some, and the mutual contradiction of others, make it impossible that they should be all true. Yet it will often happen that these men will sooner part with their lives, than suffer the truth of their opinions to be questioned.