4. Sutra
Sutra in Sanskrit is derived from the verb siv, meaning to sew. It literally means a rope or thread, and more metaphorically refers to an aphorism (or line, rule, formula), or a collection of such aphorisms in the form of a manual. In Hinduism, the ‘sutras’ form a school of Vedic study, related to and somewhat later than the Upanishads. They served and continue to act as grand treatises on various schools of Hindu Philosophy. They elaborate in succinct verse, sometimes esoteric, Hindu views of metaphysics, cosmogony, the human condition, moksha (liberation), and how to maintain a blissful, dharmic life, in a cosmic spin of karma, reincarnation, and desire.
One of the most famous of the Sutras is the Vedanta-sutra also known as Brahma-sutra.
