Kinds of the movements of the thought  can be classified and categorized as the true thought of the wisdom of the experiment, the false thought of the wisdom of education, the  verbal thought of conceived idea, the dreams of the sleep and the memory of the hidden impression.. All these are the movements of the thought  that either cause pain or the relief of the pain in the neurons of the brain..

 When the wisdom of the experiment of a thing is experienced in the unconscious state of brain   or  is consciously experienced because of one's faith in the knowledge of someone else or the  movement of thought appear to be true. It constitute  true thought of the wisdom of the experiment of a thing .

 When on hearing, seeing or reading about a particulars subject, thought occurs which apparently appears to be wrong and which gives false perception and creates doubt and delusion, such movements of thought are called  false thought of the wisdom of education . False thought is wrong knowledge of things whose falsehood is unveiled by truth  of the thought of the wisdom of the experiment of a thing .Further false thought includes doubts as also uncertain thought. If one thinks particular thought after consciously experiencing, it is called true thought of the wisdom of the experiment . But if one thinks of many thought after unconsciously experiencing it, it is called false thought of the wisdom of education. False thought of the wisdom of education increases lack of spiritual knowledge. On the other hand, true thought of the wisdom of the experiment decreases lack of spiritual knowledge and false knowledge. While false thought increases false knowledge, true thought of the wisdom of the experiment eradicates false knowledge.

When there is thought provoking subject and one has only information knowledge or a dream knowledge that can neither be experienced nor obtained through hearing or seeing imagination, such knowledge is called verbal thought  of conceived idea.

But it is a figment of one's thought. This type of thought arises when one hears a word, which has no corresponding knowledge about the future reality. Verbal thought of conceived idea  also comprises information knowledge produced by innumerable thought, imaginary ideas and concocted arguments.

The flow of thought and imaginary ideas at the time of sleep continues during sleep. Thought felt during this unconscious state of sleep disappear as soon as one comes out of the dreamland and wakes up. It is thought, which tells that one has dreamt during sleep. Such thought is called thought of the dreams of the sleep .

 The flow of thought about the past whether true or not is called thought of the memory of the hidden impression . This type of thought involves the reproduction in the present, of the storehouse of past experience, without any alterations or innovations.

What type of thought produces happiness? What type of thought brings liberation from sorrows? Whatever may be the type of thought, it is sorrows and distress oriented. That is why  Patanjali advises that all thought emanating from brain  must be stopped. It is only by halting the wheel of thought that one achieves state of consciousness. When one unconsciously thinks, the direction of one's thought goes from the unconscious state of brain   towards material things. Such thought produce pain. When one consciously concentrates and meditates, the direction of one’s thought goes from the unconscious state of brain   towards conscious state of brain  . Such thought produce liberation from pain.

What is good thought? False thought adds to lack of spiritual knowledge and unclearness. An ordinary man keeps on reaming engrossed in this type of thought. True thought of the wisdom of the experiment erases unclearness and lack of spiritual knowledge. It appears when other four kinds of thought disappear. That is why e Patanjali exhorts his disciple to eradicate all other types of thought with the help of true thought. There is no doubt that true thought of the wisdom of the experiment does lesson one's miseries. But to obtain eternal peace, happiness and serenity  even true thought of the wisdom of the experiment has to be surpassed and one's self consciousness focused on conscious state of brain  and beyond on inner soul essence. As such it is necessary to eradicate even true thought of the wisdom of the experiment to attain realization of conscious state of brain . So long as one remains immersed in the domain of false thought, it is not possible to achieve realization of conscious state of brain.

 Entry cannot be affected into the formless and deep conscious state of brain  with the help of any thought. The path leading to the portals of formless deep conscious state of brain  and state of consciousness opens only after one banishes all thought from the brain , and not before. The brain  has to be emptied of all thought; otherwise it is not possible to have an experience of and to have communication with the inner conscious state of brain  and inner soul essence. This is because it is not possible to enter this static state if one's conscious state of brain  is covered by smoke of thought flowing in outer layers of unconscious state of brain  .

The thought about past and future cannot merge in the present. Such a merger is impossible. Ashtwaker says that any type of thought including the thought pertaining to recitation of God’s name is a poison for the unconscious state of brain  . According to him, state of consciousness is achieved by considering all thought as poison and empting the brain  of them all. By this method alone, an aspirant can realize spiritual knowledge of core  nature essence as also spiritual knowledge of liberation from the cycle of birth and death. This is the advice which sage Patanjali also gives to his disciple.

How is liberation from poison like thought of the brain ? Such liberation can be achieved through the meditation practice . This practice has two parts. The first part calls for stopping the flow of thought. In order to do so, it is necessary for the aspirant to toil hard by whatever means he can but the toil has to be done in a an honest way. Thereafter efforts have to be made with grit and determination and imagination to cease the flow of thought consciously. Further, human body and brain  has to be consciously kept under the control of certain rules and regulations. These include not causing pain or hurt to any other living being in universe, speaking the truth, not indulging in backbiting and slander or maligning others, controlling carnal passions and not entertaining thought of hoarding wealth.  Patanjali calls it meditation and yoga of restraint. 

What are the rules and regulations, which are to be followed for the control of the brain ? conscious state of brain  should be kept in a state of purity, simplicity and contentment. It should further be kept in a state of readiness to accept suffering and distress. Thought of state of consciousness and God alertness are to be firmly implanted in the conscious state of brain  . One has to practice to make the body steady and stable.  Patanjali calls it the "meditation and yoga of posture". The meditation and yoga of posture also tells the aspirant to keep his brain  steady and able while sitting, in meditation. After entering into the state of introspection, an aspirant is to experience the state of state of consciousness and concentration.  Patanjali calls this state, the state of meditation. During this state brain  become thought free and starts gaining spiritual knowledge leading to state of consciousness.  Patanjali calls it  yoga or the state of Samadhi or super consciousness or Yoga music. After perfect disciple enters into the super conscious state, he does not have to perform any action. He is only to have insight vision of the path and experience state of consciousness, which has been detailed in book Meditation Practice of Patanjali website page  27 to 44.

Is enjoyment of worldly pleasures to be given up as poison?  Patanjali does not call for relinquishment of worldly pleasures as  yoga. He does not, in fact, call for renunciation of worldly pleasures. He says that their enjoyment has to be continued as per the dictates of one's nature and bent of brain . This shall be irrespective of the fact that in the eyes of society and prevailing religion, the enjoyment of these worldly pleasures is considered sinful. Whatever worldly pleasures are to be enjoyed should be enjoyed in a state of complete state of consciousness and according one's nature and inclination. The brain  has to be kept happy in all circumstances. Legal and social restrictions and restrains have, however, to be kept in conscious state of brain  . Barring them, life should be enjoyed to the tilt and with gay abandon.  Patanjali does not call for the giving up of worldly pleasures nor does he say that their enjoyment should become poison. Whatever is to be given up and whatever poisons like enjoyments one has consciously experienced are issues, which are in the domain of the flow of thought pertaining to the  world. One has to discriminate between their enjoyment and renunciation in a determined manner and with full alertness and by keeping the conscious state of brain steady and stable.

According to  Patanjali, the thought and ensuing thought as to whether the worldly pleasures are rightly being enjoyed or have become a poison will automatically enter the brain  of the perfect disciple. He stress that whatever the perfect disciple is to enjoy, has to be according to his taste and nature which cannot be changed. He says that worldly pleasures are to be enjoyed with a smile and not with frown. When a perfect disciple enjoys according to the inclination of his brain  and nature, his brain  will be steady and happy. His brain  will be ready even to bear all the suffering happily.

Is there any connection between the enjoyment of worldly pleasures and the consciousness of enjoying them? There is no direct connection between the two. This is because the enjoyment of worldly pleasures is a reality and their enjoyment takes place in the present. Enjoyment has neither a past nor a future. It is experienced in the present only. And enjoyment in the present does not cause any pain or suffering. The thought of enjoying worldly pleasures and contemplating about them cannot be experienced in the present. Imagination is the basis of this fallacy. The thought of past and future enjoyment of worldly pleasures and the pain and suffering arising out of it has no connection with the enjoyment of worldly pleasures in the present. The present is the cradle of a person’s result oriented actions.  Patanjali does not say anything about stopping the enjoyment of the results of one's deeds and karma actions. All that he is saying is about stopping of the thought of enjoyment of the result of one's deeds in the future or the past. The cycle of action and karma reaction has neither past nor a future. It is experienced in the present only.

Why is no pain felt in the enjoyment of worldly pleasures in the present? Whatever suffering is felt by the human body as a result of the enjoyment of the fruits of one's karma actions, is felt alike by all human beings. Such a suffering does not last forever. In such a state the body alone remains in a state of suffering. In the present, one does not feel distress in the brain .  This is because such an enjoyment is as per the frits of one's karma actions. Inner Nature essence has given human being and other living being a living body. This living body, which is a cosmic instrument, has been created for the enjoyment of frits of one's karma actions by inner nature essence that is flowing in conscious state of brain  .

Whenever a living being dies, the conscious state of brain  along with state of consciousness changes its residence from one living body to another as per its past karma actions. The living soul transfers its residence to enjoy at leisure the fruits of its past karma deeds. It is also a kind of change to keep the inner core  nature essence attributes and actions updated. Wrapped soul in conscious state of brain  is always in a state of rest and leisure .It is for this reason that when all living being are born after taking on another body, they are in a state of complete rest and freshness. They are calm, happy and quiet and in peace. But when they grow old, they feel less at rest in their living body. As they distance themselves more and more from the growing results of their karma actions, they feel results of their karma actions and they feel their living body becoming unbearable. Inner core  nature essence gives rest to a living being by death according his result-oriented karma seed actions.

In the present, one's state of consciousness emerges out the enjoyment of worldly pleasures and enters into the deep conscious state of brain  . In the present, the hold of one's state of consciousness breaks loose from one's body that is a matter form of nature state. One’s state of consciousness also gets detached from other matter forms of nature. In the present one's state of consciousness does not experience that one is the doer. It also does not experience that one is the enjoyer of worldly pleasures. He witnesses the formless shape of the worldly pleasures, which he is enjoying in the present. Human being state of consciousness neither enjoys the worldly pleasures nor experiences their enjoyment. It is for this reason that he gets liberated from the ensuing pain. He witnesses that his body, which is enjoying material pleasures, cannot undergo suffering and feel pain. He feels himself a separate entity and distance himself from his body.