The struggle for existence—this word is used also among the philosophers.
Hṛdayānanda:
- mamaivāṁśo jīva-loke
- jīva-bhūtaḥ sanātanaḥ
- manaḥ ṣaṣṭhānīndriyāṇi
- prakṛti-sthāni karṣati
- (BG 15.7)
"The living entities in this conditioned world are My eternal, fragmental parts. Due to conditioned life, they are struggling very hard with the six senses, which include the mind." Purport. "In this verse the identity of the living being is clearly given. The living entity is a fragmental part and parcel of the Supreme Lord-eternally. It is not that he assumes individuality in his conditional life and in his liberated state becomes one with the Supreme Lord. He is eternally fragmented. It is clearly said, sanātana. According to the Vedic version, the Supreme Lord manifests and expands Himself in innumerable expansions, of which the primary expansions are called Viṣṇu-tattva, and the secondary expansions are called the living entities. In other words, the Viṣṇu-tattva is the personal expansion, and the living entities are separated expansions. By His personal expansion, He is manifested in various forms like Lord Rāma, Nṛsiṁhadeva, Viṣṇumūrti and all the predominating Deities in the Vaikuṇṭha planets. The separated expansions, the living entities, are eternally servitors. The personal expansions of the Supreme Personality of Godhead, the individual identities of the Godhead, are always present. Similarly, the separated expansions of living entities have their identities. As fragmental parts and parcels of the Supreme Lord, the living entities have also fragmental qualities, of which independence is one. Every living entity has an individual soul, his personal individuality and a minute form of independence. By misuse of that independence, one becomes a conditioned soul, and by proper use of independence he is always liberated. In either case, he is qualitatively eternal, as the Supreme Lord is. In his liberated state he is freed from this material condition, and he is under the engagement of transcendental service unto the Lord; in his conditioned life he is dominated by the material modes of nature, and he forgets the transcendental loving service of the Lord. As a result, he has to struggle very hard to maintain his existence in the material world. The living entities, not only the human beings and the cats and dogs, but even the greater controllers of the material world—Brahmā, Lord Śiva, and even Viṣṇu—are all parts and parcels of the Supreme Lord. They are all eternal, not temporary manifestations. The word karṣati (struggling or gappling hard) is very significant. The conditioned soul is bound up, as though shackled by iron chains. He is bound up by the false ego, and the mind is the chief agent which is driving him in this material existence. When the mind is in the mode of goodness, his activities are good."
Prabhupāda: Manaḥ ṣaṣṭhānīndriyāṇi prakṛti-sthāni karṣati (BG 15.7). The struggle for existence—this word is used also among the philosophers. This is struggle. He is creating something by the mind, manaḥ, and the senses are engaged according to the dictation of the mind. Manaḥ ṣaṣṭhānīndriyāṇi. In this way, prakṛti-sthāni, within this material world, he's living a life of struggle for existence.