• i don't really write poetry, so here is a good one by Shakespeare:

    They that have the power to hurt and will do none,
    Who do not do the thing they most do show,
    Who, moving others, are themselves as stone -
    Unmoved, cold, and to temptation slow.
    They rightly do inherit heavens graces
    And husband nature's riches from expense,
    They are the lords and owners of their faces,
    Others but stewards of their excellence.
    The summer flower is to the summer sweet,
    Though to itself it only live and die,
    But if that flower with base infection meet
    The basest weed outbraves his dignity
    For sweetest things turn sourest by their deeds
    Lilies that fester smell far worse than weeds.