Bhagavad-gita also describes how one should act in order to enter into the spiritual
kingdom. Material Nature is a display of one of the energies of the Supreme Lord. In
the Visnu Purana, the energies of the Supreme Lord have been summarized. The
Lord has diverse, innumerable energies, of which we cannot conceive. But great
learned souls have summarized all of these energies into three categories: The first is
the superior, or internal, potency of the Lord. That energy is transcendental. Next is
the marginal energy, which lies between the spiritual and the material. Originally,
all the living entities belong to the eternal superior energy. The third energy, matter,
is in the mode of ignorance. Material energy is also from God. And we can, at death,
either leave this material world or remain here. Therefore, we are called marginal.

We are accustomed to think in terms of material energy. How can we transfer our
thinking of material energy into thinking of spiritual energy? There is so much
literature of the material world, like novels, newspapers, etc. We must transfer our
reading from these to the spiritual Vedic literature. The learned sages wrote a great
deal of literature, like the Puranas. In Caitanya-caritamrta there is a verse which
reads: “The conditioned souls have forgotten their eternal relationship with the
Lord, and are engrossed in thinking of material things. They should just transfer
their thinking to the Lord. He has created so many Vedas for this purpose.”

At first, there were four Vedas. Then He explained them by the Puranas. Then, for
those incapable of understanding these, He gave the Mahabharata, in which there is
the Bhagavad-gita. Then the Vedanta-stitra, which summarizes all Vedic knowledge.
At last, the Vedanta-satra was explained in Srimad-Bhagavatam.

Just as the materialist is always engaged in reading materialistic literature, so the
devotee centers his reading capacity in this literature, so kindly presented by
Vyasadeva, so that at the time of death the devotee may think of the Lord and go to
Him.

Krsna advises Arjuna not simply to go on remembering Him and give up his
material duty. The Lord never suggests anything impractical. To maintain the
material body, one has to work. The working world is divided into four parts:
brahmana, ksatriya, vaisya, and sudra. Each one works in a different way, as learned
man, administrator, mercantiler, or laborer. The Lord advises us not to give up work,
but to remember Him always, along with the struggle for existence. This is Krsna
consciousness. Unless one does this, it is not possible to go to the Lord.
