Possible Clues:

• Line from Hamlet’s soliloquy
• Cry from Hamlet when he spotted his favorite spice mix at the cookout?
• Hamlet’s words after “perchance to dream”
• Hamlet's lament
• Hamlet's satisfied comment about the starts of 20-, 32- and 39-Across?
• See 2
• 'To sleep: perchance to dream: - - '