Among the pupils of the wise and just Centaur，there wasa boy named Jason．He was by birth a prince．His father Aeson was once king of Iolcus，but was overthrown by his own half brother Pelias．So he sent his baby son Jason to the Centaur for safekeeping．As a boy Jason took part in the boarhunt．When he grew up into a strong youth he was told of the secret of his birth．So he went to avenge his father's wrongs ．

On his way back to his native city he met a weak old woman waiting to be helped across a mountain stream．Kind and polite，Jason carried the old lady on his back and walked across the stream．Little had he thought that the old woman was just Hera herself ．Thus he got the help and protection of a power fulfriend at the beginning of his life．As he lost one shoe in the stream he had to enter Pelias' palace in only one shoe． Pelias was quite scared to see such a stranger because he had been warned by a prophet to be careful of a man wearing only one shoe．He was not surprised when Jason told him who he was and what his business was about．The artful Pelias welcomed hisnephew with false pride and joy ；he promised to give up the kingdom to one who had proved himself worthy of it．And heurged the youth to bring the golden fleece back from Colchis．He felt quite certain that his nephew would never come back alivefrom the hopeless task．Pelias' prediction was quite right．Jasondied a poor death in the kingdom of Colchis．

半人半馬的怪物（Centaur）既英明又公正。他的學生中有個名叫杰森的男孩。杰森是位王子，他的父親埃宋曾是伊俄卡斯的國王，但后來王位卻被他同父異母兄弟珀利阿斯奪去了。因此他把還在襁褓中的兒子送給Centaur照料。還是個孩子時，杰森就參加過捕獵野豬。當他長成一位強壯的小伙，知道自己身世的秘密后，他決定要為父親所受的不公報仇雪恨。

在返回祖國的路上，他遇到一位老婆婆。她希望能有人幫她渡過山里的一條小溪。出于善良的天性和謙恭有禮的本能，杰森背起老人，淌過了小溪。他并未想到這位老婆婆竟是赫拉本人。因此他在生活的起點便得到了一位神通廣大的朋友的幫助和保護。由于他在過河時遺失了一只鞋子，他不得不赤著一只腳走進了珀利阿斯的宮殿。當珀利阿斯看到這個陌生人時，他驚恐異常，因為一位預言家提醒他提防一個只穿了一只鞋的男人。當杰森告訴他自己是誰以及自己此行的目的時，他并沒有感到奇怪。狡詐的珀利阿斯帶著假惺惺的自豪和喜悅迎接了這位侄子。他發誓說，他愿意放棄王位，但接替他繼承王位的人必須能夠用事實證明自己確配接受王冠。于是，他慫恿年輕人去科爾切斯取回金羊毛。他斷定他的侄子再不會活著回到他面前，因為這根本就是個不可能完成的使命。珀利阿斯的預言千真萬確。杰森悲慘地死在科爾切斯王國。