Chandogya Upanishad
āśā vāva smarād bhūyasī āśeddho vai smaro mantrān adhīte karmāṇi kurute putrāṃś ca paśūṃś cecchata imaṃ ca lokaṃ amuṃ cecchate āśām upāssveti
'Hope (âsâ) is better than memory. Fired by hope does memory read the sacred hymns, perform sacrifices, desire sons and cattle, desire this world and the other. Meditate on hope.
sa ya āśāṃ brahmety upāste āśayāsya sarve kāmāḥ samṛdhyanti amoghā hāsyāśiṣo bhavanti yāvad āśāyā gataṃ tatrāsya yathākāmacāro bhavati ya āśāṃ brahmety upāste asti bhagava āśāyā bhūya iti āśāyā bhūyo 'stīti tan me bhagavān bravītv iti
'He who meditates on hope as Brahman, all his desires are fulfilled by hope, his prayers are not in vain; he is, as it were, lord and master as far as hope reaches—he who meditates on hope as Brahman.' 'Sir, is there something better than hope?' 'Yes, there is something better than hope.' 'Sir, tell it me.'