A famous thinker once wrote that " the greatest threat to mankind is mankind itself ! " If this is indeed the case , then the current situation should make us ponder our futuer existence .

　　一位著名的思想家曾经写道：“对人类最大的威胁是人类自身！”如果事实确实如此，那么，现状应该促使我们对我们未来的生存进行思索了。