What's the difference between i.e. and e.g.?
late 14c., "kindness, graciousness," from Old French humanité, umanité "human nature; humankind, life on earth; pity," from Latin humanitatem (nominative humanitas) "human nature; philanthropy, kindness; good breeding, refinement; the human race, mankind," from humanus (see human). Sense of "human nature, human form" is c.1400; that of "human race" first recorded mid-15c.