街头的一堆西瓜,无论它有多少,对买者而言,只有三种:生的,熟的,熟过的。我们只挑熟的买。芸芸众生,男女老幼,就其心理年龄而言,也只三种:幼稚的,成熟的,世故的。幼稚的属于生瓜,成熟的属到熟瓜,世故的属于熟过的瓜。放下生瓜不谈(因为若在秧上,它还有成熟的可能),天下有谁喜欢熟过的西瓜? A pile of watermelons on the street, no matter how many, for the buyer, only three: raw, cooked, cooked over. We only know what to buy. All mortal beings, men, women and children, in terms of their psychological age, only three: naive, mature, sophisticated. Childish belonged to melon, mature belongs to ripe melon, sophisticated melon belongs to cooked. Put down the melon to talk about (because if the seedlings, it is still possible to mature), who likes to cooked watermelon?