Related Clues:

• Zeno and others
• Unflinching folks
• Zeno and Epictetus
• 'I can take it' types
• Unfeeling sorts
• Unemotional types
• Impassive ones
• Unmovable ones
• Immovable types
• Followers of Epictetus
• Greek philosophical group
• Impassive sorts
• Zeno's followers
• Unemotional people
• They bear discomforts without complaining