What's the difference between i.e. and e.g.?
1590s, "of or pertaining to Scholastic theologians" (Churchmen in the Middle Ages whose theology and philosophy was based on Church Fathers and Aristotle), from Middle French scholastique (14c.), from Latin scholasticus "of a school," from Greek skholastikos "enjoying leisure; devoting one's leisure to learning," hence, as a noun, "a scholar," also in a bad sense, "a pedant; a simpleton," from skhola (see school (n.1)). In English, meaning "pertaining to schools or to school education" is from 1640s. As a noun from 1640s. Related: Scholastical (1530s in the "relating to a school" sense); scholastically.