Prabhupāda: ātma-buddhi, this body is made up of three basic elements mucus, bile and air. According to Ayurveda it is a combination of mucus, bile and air. So this combination of mucus, bile, air, if someone thinks of these as the soul, identification of self as body and working on this basis, so the scriptures call such a person sa eva go-kharaḥ. Go means cow, and kharah means ass. So this identification with the body is not a human intelligence. Human intelligence is awakened when they inquire into the Brahman and understand that I am not this body. I am pure spirit soul, ahaṁ brahmāsmi. This is human form of life. Till the time this question is not inquired into, till he does not acquire such knowledge, he remains an animal only.
Therefore in the human society there is a system of giving education, go to any part of the civilized society, there is religious principles there because dharmeṇa hīnāḥ paśubhiḥ samānāḥ. A society in which there is no discussion on religious principles, what is dharma, who is God, what is a spirit soul, these questions are not inquired into, understand that society to be of cats and dogs only. The way such people of cats and dogs society speak, is being explained by Lord Krishna Himself. (aside: give me spectacles) So what does He say? So first He says asatyam, this material world is unreal, asatyam apratiṣṭhaṁ te jagad āhur anīśvaram aparaspara-sambhūtaṁ kim anyat kāma-haitukam (BG 16.8). Nowadays big big scientists they have a theory “accident” accidental theory. They are not able to analyze and explain. So they have made this theory of accident. Nothing happens by accident. jagad āhur ahaitukam That something happens without a cause, that is not possible in this material world. There is a cause for everything.