Greek and Roman mythology had never been my favourite subject at school, but as I grew older I began to appreciate the legends and to realise that they contained a vivid world of adventure with wonderful heroes, villains and, most importantly, lots of fantastic creatures. In the late 1950s, the producer Charles H Schneer and I discussed filming a Greek legend. Between us we read all of them and decided on Jason and his search for the Golden Fleece. ...

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