where he grabbed the rudder with both hands and, scrambling up on to the deck, slunk into a corner and sat down quiet.
The king, pleased with what he saw, said, “What art is there in this?”
The physician replied, “Originally he had not experienced the danger of being drowned, and undervalued the safety of being in a ship;
just as a person is aware of the preciousness of health only when he is overtaken with the calamity of sickness.”
国王带着一个奴隶乘坐在一条船上
奴隶从未出过海，也从未经历过坐船之苦。
他开始哭泣、悲号，四肢不停地颤抖。人们想尽办法安抚他，但他仍无法平静。
国王原本愉快的心情被他搅得不安起来，但人们却束手无策。
一个医师也在船上，他对国王说：“如果允许让我一试的话，我有办法让他平静。”
国王说道：“那就太好了。”
医师吩咐他们把奴隶扔到海里，让他反复沉浮几次后，才抓住他的头发把他拖到船边
他双手紧紧抓住船舷，爬上甲板，缩到一个角落里坐下来，不再吭声了。
国王很满意，问道：“这是什么道理？”
医师回答说：“先前他没有经历溺水的危险，所有不珍惜在船上的安全
就像一个人只有感受到病痛的折磨时，方知健康的可贵一样。”