"As the best wine doth make the sharpest vinegar, so the deepest love turneth to the deadliest hate"

This quote by John Lyly is a metaphor that compares love to white wine. It recommends that the very best love can turn sour and end up being hate. This is because, like red wine, love can end up being bitter and acidic over time. The quote suggests that the more extreme the love, the more extreme the hate can become. It suggests that the greatest emotions can rapidly become their opposites. This quote is a cautioning to be careful with our feelings and to be aware of the potential for them to alter. It is a suggestion that love can rapidly turn to hate which we need to bear in mind our relationships and how we express our feelings.