1) Ancient Greek school 2) Emotion-hiding sorts 3) Followers of Epictetus 4) Followers of zeno 5) Greek philosophical group 6) Immovable types 7) Impassive ones 8) Impassive sorts 9) Imperturbable ones 10) Passive people 11) Seemingly unemotional sorts 12) They bite the bullet 13) They take things in stride 1) Spartans