Nous, from Greek: νοῦς, is a concept from classical philosophy, sometimes equated to intellect or intelligence, for the faculty of the human mind necessary for understanding what is true or real.
The earliest surviving text that uses the word nous is the Iliad. Agamemnon says to Achilles: "Do not thus, mighty though you are, godlike Achilles, seek to deceive me with your wit (nous); for you will not get by me nor persuade me."