यतन्तो योगिनश्चैनं पश्यन्त्यात्मन्यवस्थितम्।
यतन्तोऽप्यकृतात्मानो नैनं पश्यन्त्यचेतसः।।15.11।।
।।15.11।।यत्न करनेवाले योगीलोग अपनेआपमें स्थित इस परमात्मतत्त्वका अनुभव करते हैं। परन्तु जिन्होंने अपना अन्तःकरण शुद्ध नहीं किया है? ऐसे अविवेकी मनुष्य यत्न करनेपर भी इस तत्त्वका अनुभव नहीं करते।
Preserverance of the aspirant is the persistence essential to insure success once has fully resorted to bhakti or exclusive loving devotion to the Supreme Lord Krishna. By cultivating this path they purify their minds and hearts by yoga or the individual consciousness attaining communion with the ultimate consciousness. They then realise the true nature of the atma residing within the etheric heart of the physical body and perceive it distinctly different from the body. But if their efforts even if industrous are devoid of sufficient faith in the spiritual preceptor and unalloyed devotion to the Supreme Lord and thus spiritually impotent and feeble minded, then they are handicapped and incapable of atma tattva or realisation of the soul. Hence they do not perceive it. Although the light of the sun, the moon, lightning and fire are powerful antidotes to removing darkness, they are limited to removing only external darkness and they have this power due to their empowerment by the divine consciousness of the Supreme Lord which has the capacity to remove the darkness of ignorance in the phenomenal world externally and the darkness of ignorance within the consciousness of the jiva internally.