Sonnet- You Can'T Have Opposites

When vices, virtues are but parallel lines, The former moves backward, latter forward; No one can take the mixture of such wines; No one can be both fish and also bird. There isn't a hybrid of vices, virtues; There isn't a place where both of them can meet; Just one and only one, a man must choose; You can't have Heaven's joy and Hell's great heat! The virtuous way is like climbing a hill; The road to vice is like slipping from one; While God rewards Heaven as former's bill, The latter, yields hell's eternal fire-den! One can't be both a good and bad a man; You try to have Heaven and hell, how can?