Authors:
  • Is this a dagger which I see before me,
    The handle toward my hand? Come, let me clutch thee.
    I have thee not, and yet I see thee still.
    Art thou not, fatal vision, sensible
    To feeling as to sight? or art thou but
    A dagger of the mind, a false creation,
    Proceeding from the heat-oppressed brain?

    'Macbeth' (1606) act 2, sc. 1, l. 33