duality

• about three o'clock of a black winter morning
• she had an evil face, smoothed by hypocrisy; but her manners were excellent
• all human being , as we meet them, are commingled out of good and evil
• that child of hell had nothing human ; nothing lived in him but fear and hatred
• even as good shone upon the countenance of the one , evil was written broadly and plainly on the face of the other
• i had gone to bed Henry Jekyll i had awakened Edward Hyde
• an air of invitation

  vs

  sinister block of building
• this too , was myself
• Jekyll is committed to a ' profound duplicity of life'
• double dose and double dealer
• duality of purpose
• man is not truly one but truly two