Possible Clues:

• Strange act one follows with another, having little to say
• Buttoned-up old historian briefly outside in rain
• Showing no end of sensitivity, I go quiet
• Understood vessel can be reserved
• Far from talkative
• Untalkative
• I act dumb and act tight-lipped
• Old writer’s son leaving the navy with little speech
• Time curtain's redrawn - or withdrawn
• Ornate Attic vase is reserved