सर्वेषामपि चैतेषामात्मज्ञानं परं स्मृतम् । तद् ह्यग्र्यं सर्वविद्यानां प्राप्यते ह्यमृतं ततः ॥ ८५ ॥
sanskrit
(The answer is that) the knowledge of the Soul is stated to be the most excellent among all of them; for that is the first of all sciences, because immortality is gained through that.
english translation