kiñca yadi kūṭasthanityatayā varṇā nityā na bhaveyus tadā sarveṣāṃ prayoktṝṇāṃ paraprayuktāneva śabdān brūmaha ityeṣā vivakṣā na syāt /
Moreover, if letters were not eternal in the sense of being unchangeable, then all speakers could not have the intention [expressed as] "we are uttering only those words that have been used by others."