18 yato vayaṁ pratyakṣān viṣayān anuddiśyāpratyakṣān uddiśāmaḥ| yato hetoḥ pratyakṣaviṣayāḥ kṣaṇamātrasthāyinaḥ kintvapratyakṣā anantakālasthāyinaḥ|