Historical clue formulations

• Hedonist's opposite — 2024-01-27
• Antithesis of a hedonist — 2022-02-12
• Severely self-disciplined sort — 2021-05-21
• Mahatma Gandhi, for one — 2012-09-28
• Hedonist's opposite — 2011-08-27
• Like some monks — 2009-06-05
• Monk, perhaps — 1999-01-08
• Loner — 1994-03-29