The atomic scientist may consider annihilating the material world by nuclear weapons, but his weapons cannot destroy the anti-material world. The anti-material particle is more clearly explained in the following lines:
It is neither cut into pieces by any material weapon, nor is it burnt by fire. Nor is it moistened by water, nor withered, nor dried up, nor evaporated in the air. It is indivisible, nonflammable and insoluble. Because it is eternal, it can enter into and leave any sort of body. Being steady by constitution, its qualities are always fixed. It is inexplicable, because it is contrary to all material qualities. It is unthinkable by the ordinary brain. It is unchangeable. No one, therefore, should ever lament for what is an eternal, anti-material principle.
Thus, in the Bhagavad-gītā and in all other Vedic literatures the superior energy (anti-material principle) is accepted as the vital force, or the living spirit. This is also called the jīva. This living principle cannot be generated by any combination of material elements. There are eight material principles which are described as inferior energies, and they are: (1) earth, (2) water, (3) fire, (4) air, (5) ether, (6) mind, (7) intelligence and (8) ego. Apart from these is the living force, or the anti-material principle, which is described as the superior energy. These are called "energies" because they are wielded and controlled by the supreme living being, the Personality of Godhead (Kṛṣṇa).
For a long time the materialist was limited within the boundary of the eight material principles mentioned above. Now it is encouraging to see that he has a little preliminary information of the anti-material principle and the anti-material universe. We hope that with the progress of time the materialist will be able to estimate the value of the anti-material world, in which there is no trace of material principles. Of course the very word "anti-material" indicates that the principle is in opposition to all material qualities.
There are, of course, the mental speculators who comment upon the anti-material principle. These fall into two main groups, and they arrive at two different erroneous conclusions. One group (the gross materialists) either denies the anti-material principle or admits only the disintegration of material combination at a certain stage (death). The other group accepts the anti-material principle as being in direct opposition to the material principle with its twenty-four categories. This group is known as the Sāṅkhyaites, and they investigate the material principles and analyze them minutely. At the end of their investigation, the Sāṅkhyaites finally accept only a transcendental (anti-material) nonactive principle. However, difficulties arise for all these mental speculators because they speculate with the help of inferior energy. They do not accept information from the superior. In order to realize the real position of the anti-material principle, one must rise to the transcendental plane of superior energy. Bhakti-yoga is the very activity of superior energy.