"spartan courage"
"a parent severe to the pitch of hostility"
"a hefty six-footer with a rather severe mien"
"a strict disciplinarian"
"a Spartan upbringing"
"Be systematically ascetic...do...something for no other reason than that you would rather not do it"
"a desert nomad's austere life"
"a spartan diet"
"a spartan existence"