红与黑

                                       红与黑

                                       对比鲜明，反差巨大

                                       有时

                                       很难辨别和区分

                                       就像人心

                                       很难捉摸，不易看透

                                       有时

                                       还能相互转化

                                       就像人心，原本是红的

                                       在特定的场合

                                       为了达到某种目的

                                       也会变成黑的

                                       （图片取自网络）