Related Clues:

• Vision
• The light bulb, to Edison
• "The very ___!"
• Flash of brilliance
• Postulation
• Adornment for Clarence
• Creative thought
• It may be seminal
• Sign of lightheadedness?
• Thesis basis
• Fanciful notion
• Brainstorming session result
• Bean concoction?
• "Ah-ha" predecessor
• Holy emanation