Physical pain can be for eternal. But nature helps you to acquire knowledge to remove this pain. Once you acquire this knowledge the nature stops evolving for you.
Therein does the sentient Spirit experience pain caused by decay and death on account of the non-cessation of the subtle body. Therefore, pain is in very nature of things.
Life always and continuously suffers from pain. Minor diseases, major diseases, body and joint aches are always there. Dry and itchy skin, cracks and wounds, improper sleep, indigestion are always giving pain. Normal doctors will not be able to help. The pain will come back again in different forms. Modern medicine always comes with side effects.
Thus to release from this pain it will require salvation by using yogic means – exercise and meditation. A yogi does not suffer from pain and die by casting off his body. There are some great souls who die with momentary disorders, like heart attack when sleeping in night; otherwise they maintain a clean health. Thus by acquiring the true knowledge, i.e., we are not our bodies, and we are our souls; we can relieve us from the pain.
Rabindranath was the greatest Bhakta (devotee), philosopher, and poet of modern India. He confirms the liberation along the Samkhya way: As long as my heart and soul are with the infinite, no matter how far I go, I do not see pain, death, and separation. Realization of your own self all the time in my life, relieves me in moments from internal suffering, and burden of life [Tagore, Tomaro aseeme].
Just as the secretion of milk which is unintelligent, is for the sake of the nourishment of the calf, similar is the action of the Nature for the sake of the release of Soul.
This verse 57 gives an example of how nature works for the benefit of others. Non-intelligent milk flows only to help the calf. Note that this action cannot be considered as the action of a sentient being, the soul. The soul itself is inactive. All actions come from nature only. Nature is active because of its Rajas guna. Thus nature acts only to relieve the soul by motivating the soul to acquire true knowledge. Pain is also created for the similar reasons by the subtle body.
By means of this knowledge, the Spirit, as a witness, pure and at ease, beholds Nature, which has ceased from evolving products, and desisted from the seven forms of evolution, under the influence of the purpose of the Spirit.
It says there are seven forms of evolution: virtue, vice, ignorance, dispassion, passion, power, and weakness. Thus evolution will cease when all seven characteristics become complete. This completeness can take very long time and many life times. It may stop temporarily but again ignorance may start because of the evolution of the global plan. Thus the soul will always remain in contact with the intelligence and the subtle body to perceive the nature.
Moreover, as we have mentioned, we are all guided by the global destiny, which is based on the simultaneity law. Thus I may be needed by someone else. Thus my ignorance, which may be due to lack of my knowledge that someone else needs me, can never end.
When (in course of time) separation from the body has taken place, and there is the cessation of activity of the Nature, for the reason of the purpose having been fulfilled, (Soul) attains both absolute and final Freedom.
The verse states that “Soul attains both absolute and final Freedom”. But it does not say “what the Freedom from” is. Is the freedom from cycles of birth or freedom from the sufferings in life due to reincarnations?
The Smakhya Theory starts with the concept of finding the truth. It says if you know the truth only then you can be happy. Therefore the theory is not about how to avoid reincarnation but how to avoid suffering. Thus this verse SK 68 is about freedom from suffering.
The author of this book believes that freedom from reincarnation is not possible for various reasons: (a) reincarnation is a law of nature and no human can overcome that (b) Gita verse [G.2.27] says a person who has died must be born again, and who has born must die. Thus this Gita verse establishes that reincarnation is a law of nature (c) Another Gita verse [G.4.5] says both Krishna and Arjun were born many times before Mahabharat period, Krishna remembers all his previous births but Arjun does not. Thus Krishna, who is considered as god by many, does not have freedom from reincarnations. (d) Another Gita verse [G.4.8] says Krishna will come millennium after millennium to reestablish dharma in the societies. Thus Krishna could not escape destiny. (e) [SK, 39] says subtle body is ever lasting. Therefore it will be born again. Verse [SK, 39] means soul cannot escape the bondage of subtle body. (f) Nobody can escape destiny. A soul does not have freedom to achieve freedom from reincarnations; it is tied by the simultaneity law which created global destiny. (g) A soul is born for helping other souls. Soul does not take life only for himself. So the soul will continue with rebirth. (h) Soul cannot learn everything about universe. The universe is continuously changing, so knowledge is changing also. (i) Gita verse [G.7.26] says nobody can learn soul completely. Thus a soul cannot learn itself. Thus knowledge is never ending and therefore reincarnation cannot be escaped. Therefore the condition of [SK, 68], the “purpose have been fulfilled” only means liberation from suffering.
When a soul learns the difference between soul and the nature, then he learns to become detached from nature. The soul becomes free from suffering and pain. The soul is a yogi now.
Happiness is the goal for every human being, but Samkhya says you can get happiness only by acquiring the ultimate truth. All other methods will give you temporary solutions. Pain is eternal, from [SK, 55] described before; we see that as long as the subtle body is with us we will have pain.
From the torment caused by the three kinds of pain, proceeds a desire for inquiry into the means of terminating them; if it be said that (the inquiry) is superfluous since visible means exist, (we reply), not so; because (in the visible means) there is absence of certainty (in the case of the means) and permanency (of pain).
Three kinds: There are three kinds of pain and they are intra-organic, caused by external influences, and caused by supernatural agencies. Intra-organic is twofold – bodily and mental. Pains due to external influences are due to man, beast, animals, viruses etc. The pains due to supernatural causes may be due to destiny: accidents, floods, earthquake, wars, cold, heat etc.
But there are many remedies for removing such pains. However sooner or later we realize that such pain removing methods are not permanent and create other kinds of pain, called side effects. For example mental pain can be removed by having objects like charming women, pleasing drinks, foods, cosmetics, houses, cars etc. There are similarly easy methods for removing other kinds of pains also.
But we see that these obvious methods do not cure the pains permanently. Sometimes the old pain comes back, sometimes side effects appear or the original pain appears in a different form. Or the cure of one pain creates another pain of different kind particularly of mental types. Therefore the question still haunts us, or will haunt in some life as we gain more experiences about life: how to get rid of pains permanently. The Samkhya philosophy provides that knowledge, which will permanently remove the pain and bring happiness.
The scriptural means is like the obvious means since it is linked with impurity, decay and excess. The means contrary to both and proceeding from the Discriminative knowledge of the Manifest, the Unmanifest and the Spirit, is superior.
Knowledge: We must learn the truth. It is necessary to practice this truth by yogic means over many life times. This truth is the knowledge that gives the ability to discriminate between the soul and the nature. The distinction among manifest, unmanifest, and the soul can only help to know that the soul is inactive, it is the nature that creates the pleasure and pain and not the soul. It is the desire of the soul that causes the pain, so we must understand the soul and objects it creates, and their differences. Only this knowledge can give us happiness. This knowledge will allow us to remain detached from nature, become a yogi, and perform selfless karma for the society. This approach to life will bring permanent relief from pain.
This true knowledge, that is, the discriminative knowledge between soul and nature, and then experiencing this knowledge via yogic meditation will allow us to create a body with certain combination of three gunas that will make the body free from all kinds of pain.
To create an object we need some material and some effort. The root material and the root effort, according to Samkhy Theory, are both unmanifested objects. This root material is called primordial nature, or simply the nature, and the root effort is provided by the soul.
The soul always wants to enjoy the nature. Therefore nature joins the soul to create objects. The soul is conscious but inactive; the nature is unconscious but active. Thus when joined together they can sustain life together.
In one lifetime it is not possible to know the universe, so the soul reincarnates eternally life after life. However, in every life besides enjoying nature, it also suffers from pain. Suffering from this pain, the soul eventually learns to meditate and becomes a yogi in some life.
Using this meditation process, a man learns that he is a soul and not the body. He understands that the nature is separate from the soul. He then does not feel any more pain and feels liberated. The soul still takes birth, because we are born for others, but he does not suffer anymore. A true yogi never becomes sick; he can heal any sick person also. A true yogi learns how to castoff his body.