Material bondage is caused by deviation from the service of the Lord and attempts to imitate Him. The Lord is imitated by Māyāvādī philosophers who try to become one with the Lord in an artificial way. When the Māyāvādī philosophers think of themselves as liberated, they are under the delusion of mental concoction. No one can become one with or equal to God. To imagine this is to continue one's bondage in material existence.
(Srimad Bhagavatam-----4:29:26-27-----purport).

In the modern age of democracy there are so many government representatives voting for legislation. Every day they bring out a new law. But because these laws are only mental concoctions manufactured by inexperienced conditioned souls, they cannot give relief to human society. Formerly, although the kings were autocrats, they strictly followed the principles laid down by great sages and saintly persons. There were no mistakes in ruling over the country, and everything went perfectly. The citizens were completely pious, the king levied taxes legitimately, and therefore the situation was very happy.
(Srimad Bhagavatam-----4:20:15-----purport).

If a person is in the mode of goodness, his mental activities will promote him to a higher planetary system. Similarly, if he has a low mentality, his future life will be most abominable. The lives of the living entity, in both the past and the future, are indicated by the mental condition. Nārada Muni is herein offering the King blessings of all good fortune so that the King will not desire anything or make plans for sense gratification. The King was engaged in fruitive ritualistic ceremonies because he hoped to get a better life in the future. Nārada Muni desired him to give up all mental concoctions. As explained before, all bodies in heavenly planets and hellish planets arise from mental concoctions, and the sufferings and enjoyments of material life are simply on the mental platform.
(Srimad Bhagavatam-----4:29:66-----purport).

In the previous verse it was explained that in dreams we see that which was experienced during the day. But why is it that we sometimes in our dreams see what we have never heard of or seen at any time during this life? Here it is stated that even though such events may not be experienced in this life, they were experienced in previous lives. According to time and circumstance, they combine so that in dreams we see something wonderful that we have never experienced. For instance, we may see an ocean on the peak of a mountain. Or we may see that the ocean has dried up. These are simply combinations of different experiences in time and space. Sometimes we may see a golden mountain, and this is due to our having experienced gold and mountains separately. In the dream, under illusion, we combine these separate factors. In this way we are able to see golden mountains, or stars during the day. The conclusion is that these are all mental concoctions, although they have actually been experienced in different circumstances. They have simply combined together in a dream.
(Srimad Bhagavatam-----4:29:67-----purport).

On the basis of mental concoction, social behavior has been formulated. If one's mind is absorbed in these activities, he certainly remains conditioned within the material world. According to different opinions, there are eleven or twelve mental activities, which can be transformed into hundreds and thousands. A person who is not Kṛṣṇa conscious is subjected to all these mental concoctions and is thus governed by the material energy. The living entity who is free from mental concoctions attains the platform of pure spirit soul, devoid of material contamination.
(Srimad Bhagavatam-----5:11-----summary).

Everything in the material world is but a transformation of the earth, although things have different names according to their transformations. Actually the varieties are one and the same, and ultimately all these varieties are vanquished into atoms. Nothing is permanent in this material world. The variety of things and their distinctions are simply mental concoctions.
(Srimad Bhagavatam-----5:12-----summary).

King Rahūgaṇa argued that the living entity is within the body and that when the body is fatigued the living entity within must therefore be suffering. It is clearly explained in the following verses that the living entity does not suffer due to the body's fatigue. Śrīla Viśvanātha Cakravartī gives an example of a child heavily decorated with ornaments; although the child's body is very delicate, he does not feel fatigue, nor do the parents think that his ornaments should be taken away. The living entity has nothing to do with bodily pains and pleasures. These are simply mental concoctions. An intelligent man will find the original cause of everything. Material combinations and permutations may be a matter of fact in worldly dealings, but actually the living force, the soul, has nothing to do with them.
(Srimad Bhagavatam-----5:12:5-6-----purport).

At night one dreams of tigers and snakes, and while dreaming he actually sees them, but as soon as the dream is broken they no longer exist. Similarly, the material world is a creation of our mental concoctions. We have come to this material world to enjoy material resources, and by mental concoction we discover many, many objects of enjoyment because our minds are absorbed in material things. This is why we receive various bodies. According to our mental concoctions we work in various ways, desiring various achievements, and by nature and the order of the Supreme Personality of Godhead (karmaṇā-daiva-netreṇa (S.B.3:31:1) we get the advantages we desire. Thus we become more and more involved with material concoctions. This is the reason for our suffering in the material world. By one kind of activity we create another, and they are all products of our mental concoctions.
(Srimad Bhagavatam-----5:15:24-----purport).

In dreams we sometimes enjoy eating sweet rice and sometimes suffer as if one of our beloved family members had died. Because the same mind and body exist in the same material world of duality when we are awake, the so-called happiness and distress of this world are no better than the false, superficial happiness of dreams. The mind is the via medium in both dreams and wakefulness, and everything created by the mind in terms of saṅkalpa and vikalpa, acceptance and rejection, is called manodharma, or mental concoction.
(Srimad Bhagavatam-----6:17:30-----purport).

When our senses are purified of material contamination, they become atīndriya, transcendental senses, and when the transcendental senses are engaged in the service of the master of the senses, Hṛṣīkeśa, one can derive real transcendental pleasure. Whatever distress or happiness we manufacture by mental concoction through the subtle mind has no reality, but is simply a mental concoction. One should therefore not imagine so-called happiness through mental concoction. Rather, the best course is to engage the mind in the service of the Lord, Hṛṣīkeśa, and thus feel real blissful life.
(Srimad Bhagavatam-----7:2:48-----purport).

Even if by fruitive activity or worship of the demigods one is elevated to the higher planetary systems for sense enjoyment, his situation is condemned in Bhagavad-gītā as antavat, perishable. The happiness one enjoys in this way is like the pleasure of embracing a young woman in a dream; for some time it may be pleasing, but actually the basic principle is false. The mental concoctions of happiness and distress in this material world are compared to dreams because of their falseness. All thoughts of obtaining happiness by using the material senses have a false background and therefore have no meaning.
(Srimad Bhagavatam-----7:2:48-----purport).