Ethics in religion concept, it demands careful and sustained reflection by every man and woman before it can become part of one's life. Ethics that constitute a dharmic life - that is a moral, ethical, virtuous life - evolve in vedas and upanishads. Ethical subjects and questions are debated by various schools of Hinduism, quite extensively, in numerous texts on what is right conduct, when, how and why. Over time, new virtues were conceptualized and added by ancient Hindu scholars, some replaced, others merged. For example, Manusamhita initially listed ten virtues necessary for a human being to live a "dharmic" life: "Dhriti" (courage),
Vedas towards the end of the vedic period, around or after the middle of the 1st millennium BCE. These auxiliary fields of Vedic studies emerged because the language of the Vedas, composed centuries earlier, became too archaic to the people of that time. The Vedangas were sciences that focused on helping understand and interpret the Vedas that had been composed many centuries earlier. The six subjects of Vedanga are phonetics (), poetic meter (), grammar (), etymology and linguistics (Nirukta), rituals and rites of passage (), time keeping and astronomy (). Vedangas developed as ancillary studies for the Vedas, but its