When did the body first set out on its own adventures? .

"When did the body first set out on its own adventures? . . after having ditched its old traveling companions, the mind and the soul, for whom it had once been considered a mere corrupt vessel or else a puppet acting out their dramas for them, or else bad company, leading the other two astray.  (...) But the body had its own cultural forms. It had its own art. Executions were its tragedies, pornography was its romance." 

Oryx and Crake by Margaret Atwood