出自汉·桓宽《盐铁论·刺赋》。释义:冰和炭不能放在同一个容器之中,太阳和月亮也不会同时照耀大地。比喻君子与小人不能同处,或比喻相互矛盾的理论不能同时运用。
"The only thing we know about the future is that it will be different."
"A leader's job is to help people see the future."