The anarchic nature of the international system forces states to compete for power.

The moment of betrayal is the worst, the moment when you know beyond any doubt that you've been betrayed: that moment when you're glad to die.

出自先秦《荀子·强国》。一个人知道爱惜生命、安于快乐而抛弃礼义，那就好比想长寿而自刎其颈一样。此以比喻来说明坚守礼仪对于“贵生乐安”的重要性，强调治国安邦不可缺失礼义的意义。