One should spend reasonably，in proportion to his income，neither too much nor too little。He should not hoard wealth avariciously，nor should he be extravagant。一个人用钱应该合理，并且跟他的收入成比例，不可浪费，也不可吝啬；不可处心积虑贪图财富，也不可挥霍奢侈。