The four principles of life allow one to live according to religious principles, to earn money according to one’s position in society, to allow the senses to enjoy the sense objects according to regulations, and to progress along the path of liberation from this material attachment. As long as the body is there, it is not possible to become completely free from all these material interests. It is not, however, recommended that one act only for sense gratification and earn money for that purpose only, sacrificing all religious principles.

Lord Nṛsiṁhadeva appearance day evening class by His Grace Prabhavishnu Prabhu

By nature’s own way, our activities are to be gradually diverted to devotional service. But there are philosophers who, instead of purifying their activities, try to make everything zero, or void of all activities. This lack of activity is represented by the trees and the hills. This is a kind of punishment inflicted by the laws of nature. If we do not properly execute our mission of life in self-realization, nature’s punishment will render us inactive by putting us in the form of trees and hills. Therefore activities directed toward sense gratification are condemned herein.

Human life is especially meant for self-realization. “Self” refers to the Superself and the individual self, the Supreme Personality of Godhead and the living entity. When, however, one becomes more interested in the body and bodily sense gratification, he creates for himself obstructions on the path of self-realization.

The living entity, or the soul, is ever existing and eternal. It cannot be lost, but learned scholars say that it is lost when actual knowledge is not working. That is the difference between animals and human beings. According to less intelligent philosophers, animals have no soul. But factually animals have souls. Due to the animals’ gross ignorance, however, it appears that they have lost their souls. Without the soul, a body cannot move.

If a big lake is covered all around by long kuśa grass, just like columns, the waters dry up; similarly, when the big columns of material desire increase, the clear water of consciousness is dried up. Therefore these columns of kuśa grass should be cut or thrown away from the very beginning. Śrī Caitanya Mahāprabhu has instructed that if from the very beginning we do not take care of unwanted grass in the paddy fields, the fertilizing agents or water will be used by them, and the paddy plants will dry up.

Śrīmad Bhāgavatam class on Mon 13th May 2019 by Yamuna Lila Dāsi 4.22.29 by Hare Krishna Melbourne

Being covered by material desires, a spirit soul is also considered to be covered by designations belonging to a particular type of body. Thus he considers himself an animal, man, demigod, bird, beast, etc. In so many ways he is influenced by false identification caused by false egotism, and being covered by illusory material desires, he distinguishes between matter and spirit. When one is devoid of such distinctions, there is no longer a difference between matter and spirit. At that time, the spirit is the only predominating factor.

When one is liberated from the material qualities, he does not do anything for his personal sense gratification. At that time all activities performed by him are absolute. In the conditioned state there are two kinds of activities: one acts on behalf of the body, and at the same time he acts to become liberated. The devotee, when he is completely free from all material desires or all material qualities, transcends the duality of action for the body and soul. Then the bodily concept of life is completely over.

The individual soul is liberated when it comes out of the material heart or cleanses the heart to make it spiritualized. The example given here is very appropriate: yonim ivotthito ’gniḥ. Agni, or fire, comes out of wood, and by it the wood is completely destroyed. Similarly, when a living entity increases his attachment for the Supreme Personality of Godhead, he is to be considered like fire. A blazing fire is visible by its exhibition of heat and light; similarly, when the living entity within the heart becomes enlightened with full spiritual knowledge and detached from the material world, he burns up his material covering of the five elements — earth, water, fire, air and sky — and becomes free from the five kinds of material attachments, namely ignorance, false egoism, attachment to the material world, envy and absorption in material consciousness.