Possible Clues:

• Words repeated after 'O Absalom' in the Bible
• Last words of Kipling's "If—"
• Last words of Kipling's 'If—'
• Last words of Kipling's 'If'
• "'Beware the Jabberwock, __!'"
• "___, the doctor"
• ''__, the doctor!''
• 'O Absalom, - - '
• "---, the doctor"
• '... you'll be a Man --',