Srimad Bhagavatam

References to text SB 1.5.18
SB 1.5.18: Persons who are actually intelligent and philosophically inclined should endeavor only for that purposeful end which is not obtainable even by wandering from the topmost planet [Brahmaloka] down to the lowest planet [Pātāla]. As far as happiness derived from sense enjoyment is concerned, it can be obtained automatically in course of time, just as in course of time we obtain miseries even though we do not desire them.

Text №
“ ‘The transcendental position cannot be attained by wandering up and down from Brahmaloka and Satyaloka to Pātālaloka. If one is actually intelligent and learned, he should endeavor for that rare transcendental position. By the force of time one attains whatever material happiness is available within the fourteen worlds, just as one attains distress in due course of time. But since spiritual consciousness is not attained in this way, one should try for it.’
The Sixty-One Explanations of the Atmarama Verse
CC 2.24.169