生活中到处可见成本：向前迈一步的成本是不能退一步，欢乐的成本是忘了痛苦，撒谎的成本是还得撒一个更大的谎，诚实的成本是常常吃亏，偷懒的成本是失去工作，勤劳的成本是失群，随和的成本是被轻视，权利的成本是义务，享乐的成本是虚度，独裁的成本是风险和多数人的压抑， The cost of living everywhere: the cost of a step forward is not to take a step back, the cost of happiness is to forget the pain, the cost of lying is to spread a bigger lie, honest cost is often loss, lazy cost is lost The cost of work and hard-working is the loss of the group. The easy-going costs are taken lightly. The cost of the right is the obligation. The cost of hedging is the idleness. The cost of dictatorship is the risk and depressive of the majority.