Possible Clues:

• See 67-Across
• Put the 'A' in art, essentially
• Idea the artist grasps, fundamentally
• Answer that describes both energy and resistance deep down
• Essentially a threat to be averted
• Substantially consisting of articles and paintings
• Essentially that's worked to grab attention
• Essentially consisting of articles and paintings
• A nasty threat, deep down
• Good way to be young?