naca sadāsattvavyatirekeṇa nityatvalakṣaṇam asti yadāha ---"nityaṃ tamāhur vidvāṃso yaḥ svabhāvo na naśyatī"ti //
And there is no other definition of eternality apart from constant existence, as it is said: "The wise call that nature eternal which does not perish."