Why does the Author return to Karoo in the play, Valley Song?

What the wants is to live in the "real" world, so he has chosen to return to the Karoo and purchase a small house on a piece of farmland, where he can live out the rest of his days writing prose ("no more nonsense from actors and producers and critics"), smelling the rich, fertile land, and eating the vegetables that grow in his own patch of the earth. His conscience, however, causes him to be troubled at the plight of Abraam Jonkers, the poor old black man who has lived his entire life on the land The Author is buying, but because of South Africa's racial discrimination, has never been able to own any of it for himself.