Possible Clues:

• Uninclined to complain
• Small bed in lift occupied by one patient
• Rod, almost entirely without love and showing little emotion
• A philosopher closed in thus
• Unemotional thinker
• Uncomplaining in suffering
• Marcus Aurelius, for one
• Zeno, say, thus digesting books from the East
• Very cool
• Endure endlessly without love? One can't complain