Possible Clues:

• '... must all learn to live together as brothers, ___ will all perish together as fools': M.L.K. Jr
• 'Either they ___ must lower lie': 'Henry IV Part 1'
• ''You pass __ pay'' (test-prep guarantee)
• "Say as he says, ___ shall never go" ("The Taming of the Shr
• 'Say as he says, ___ shall never go': 'The Taming of the Shrew'