Philosophy of Charvaka
Charvaka originally known as Lokāyata and Bārhaspatya, is the ancient school of Indian materialism. Charvaka holds direct perception, empiricism, and conditional inference as proper sources of knowledge, embraces philosophical skepticism and rejects Vedas, Vedic ritualism, and supernaturalism. Ajita Kesakambali is credited as the forerunner of the Charvakas, while Brihaspati is usually referred to as the founder of Charvaka or Lokāyata philosophy. Much of the primary literature of Charvaka, the Barhaspatya sutras (ca. 600 BCE), are missing or lost. Its teachings have been compiled from historic secondary literature such as those found in the shastras, sutras, and the Indian epic poetry as well as in the dialogues of Gautama Buddha and from Jain literature.
The Charvaka epistemology holds perception as the primary and proper source of knowledge, while inference is held as prone to being either right or wrong and therefore conditional or invalid. Perceptions are of two types, for Charvaka, external and internal. External perception is described as that arising from the interaction of five senses and worldly objects, while internal perception is described by this school as that of inner sense, the mind. Inference is described as deriving a new conclusion and truth from one or more observations and previous truths. To Charvakas, inference is useful but prone to error, as inferred truths can never be without doubt. Inference is good and helpful, it is the validity of inference that is suspect – sometimes in certain cases and often in others. To the Charvakas there were no reliable means by which the efficacy of inference as a means of knowledge could be established.
Charvaka’s epistemological argument can be explained with the example of fire and smoke. Kamal states that when there is smoke (middle term), one’s tendency may be to leap to the conclusion that it must be caused by fire (major term in logic). While this is often true, it need not be universally true, everywhere or all the times, stated the Charvaka scholars. Smoke can have other causes. In Charvaka epistemology, as long as the relation between two phenomena, or observation and truth, has not been proven as unconditional, it is an uncertain truth. Such methods of reasoning, that is jumping to conclusions or inference, is prone to flaw in this Indian philosophy. Charvakas further state that full knowledge is reached when we know all observations, all premises and all conditions. But the absence of conditions, state Charvakas, can not be established beyond doubt by perception, as some conditions may be hidden or escape our ability to observe. They acknowledge that every person relies on inference in daily life, but to them if we act uncritically, we err. While our inferences sometimes are true and lead to successful action, it is also a fact that sometimes inference is wrong and leads to error. Truth then, state Charvaka, is not an unfailing character of inference, truth is merely an accident of inference, and one that is separable. We must be skeptics, question what we know by inference, question our epistemology.
Charvaka epistemology represents minimalist pramāṇas (epistemological methods) in Hindu philosophy. The other schools of Hinduism developed and accepted multiple valid forms of epistemology.To Charvakas, Pratyakṣa (perception) was the one valid way to knowledge and other means of knowledge were either always conditional or invalid. Advaita Vedanta scholars considered six means of valid knowledge and to truths: Pratyakṣa (perception), Anumāṇa (inference), Upamāṇa (comparison and analogy), Arthāpatti (postulation), Anupalabdhi (non-perception, cognitive proof) and Śabda (word, testimony of past or present reliable experts). While Charvaka school accepted just one, the valid means of epistemology in other schools of Hinduism ranged between 2 and 6.
Charvakas rejected many of the standard religious conceptions of Hindus, Buddhists and Jains, such as an afterlife, reincarnation, samsara, karma and religious rites. They were critical of the Vedas, as well as Buddhist scriptures. The Sarvadarśanasaṃgraha with commentaries by Madhavacharya describes the Charvakas as critical of the Vedas, materialists without morals and ethics. To Charvakas, the text states, the Vedas suffered from several faults – errors in transmission across generations, untruth, self-contradiction and tautology. The Charvakas pointed out the disagreements, debates and mutual rejection by karmakanda Vedic priests and jñānakanda Vedic priests, as proof that either one of them is wrong or both are wrong, as both cannot be right. Charvakas, according to Sarvadarśanasaṃgraha verses 10 and 11, declared the Vedas to be incoherent rhapsodies whose only usefulness was to provide livelihood to priests. They also held the belief that Vedas were invented by man, and had no divine authority. Charvakas rejected the need for ethics or morals, and suggested that “while life remains, let a man live happily, let him feed on ghee even though he runs in debt”. The Jain scholar Haribhadra, in the last section of his text Saddarsanasamuccaya, includes Charvaka in his list of six darśanas of Indian traditions, along with Buddhism, Nyaya-Vaisheshika, Samkhya, Jainism and Jaiminiya. Haribhadra notes that Charvakas assert that there is nothing beyond the senses, consciousness is an emergent property, and that it is foolish to seek what cannot be seen. The accuracy of these views, attributed to Charvakas, has been contested by scholars.