Considered one of the most important writers in Sweden and globally recognized primarily as a playwright. He is regarded by the Swedish scene innovator and forerunner of the theater of cruelty and absurdity.

Schizophrenic personality, for most of his life he was harassed and persecuted. This peculiarity gave his work a special force and drama. Feeling attacked and persecuted by the feminist movement, the feminist youth soon became misogyny. He starred strong ethical and political controversy since his death was recognized as a hero of the working classes, attending his funeral more than 60,000 people.