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。
The truth is balance, but the opposite of truth, which is unbalance, may not be a lie.
The city is a collective work of art.
Liberty cannot be preserved without a general knowledge among the people.