Percevel's Task

Perceval’s development cannot be understood only as an example of the coming to consciousness of one individual but also as a symbolic representation of a collective evolution, conditioned by the age.  Seen in this light the figure of Perceval himself becomes a symbol and represents an archetypal content.   TGL 109

When Perceval has to solve the riddle of the Grail, this means that he should make his own psychic problems and his extensive inner nature conscious.  TGL 111