89. But you say: `The ambiguity of the word o0moou/sion troubles and offends me.' I pray you hear me again and be not offended. I am troubled by the inadequacy of the word o0moiou/sion. Many deceptions come from similarity. I distrust vessels plated with gold, for I may be deceived by the metal underneath: and yet that which is seen resembles gold. I distrust anything that looks like milk, lest that which is offered to me be milk but not sheep's milk: for cow's milk certainly looks like it. Sheep's milk cannot be really like sheep's milk unless drawn from a sheep. True likeness belongs to a true natural connection. But when the true natural connection exists, the o0moou/sion is implied. It is a likeness according to essence when one piece of metal is like another and not plated, if milk which is of the same colour as other milk is not different in taste. Nothing can be like gold but gold, or like milk that did not belong to that species. I have often been deceived by the colour of wine: and yet by tasting the liquor have recognized that it was of another kind. I have seen meat look like other meat, but afterwards the flavour has revealed the difference to me. Yes, I fear those resemblances which are not due to a unity of nature.