Friendship can only exist between persons with similar interests and points of view. Man and woman by the conventions of society are born with different interests and different points of view.

A series of psychotic attacks between 1894 to 1896 (referred to as his "Inferno crisis") led to his hospitalisation and return to Sweden. From his earliest work Strindberg developed forms of dramatic action language and visual composition so innovative that many were to become technically possible to stage only with the advent of film. During the 1890s he spent significant time abroad engaged in scientific experiments and studies of the occult.