Related Clues:

• What Rodin's Thinker is thinking?
• ''I wonder . . .''
• 'Very interesting . . .'
• Thinking aloud?
• "I need to think about that ..."
• "That's odd ... "
• 'That's odd ... '
• 'I've gotta think ...'
• Sound of contemplation
• "I'm thinking"
• 'I'm thinking'
• Sound from a ponderer
• "Interesting"
• "Wait, it'll come to me in a second" sound
• “I wonder...”