On the other hand, it seems striking that only the senses of sight and hearing are taken into account. Is this a way to submit to common opinion, which is that touch, taste and smell are somehow more shameful and base than the other senses? Finally, it is not simply because pleasure comes from seeing or hearing that it is beautiful. Socrates throws himself into a series of considerations: taking into account pairs of objects, in the Majority of cases the term which they apply to both objects (A and B are beautiful, A and B are just) can apply also to an object taken separately (A is beautiful and B is beautiful). But in some rare cases it can happen that it this is not the case, notably when the sum of A and B forms an even number and A and B, taken in isolation, are two odd numbers.