A quote from C. G. Jung

The man who would learn the human mind will gain almost nothing from experimental psychology. Far better for him to put away his academic gown, to say good-bye to the study and wander with the human heart through the world. There, in the horrors of the prison, the asylum, and the hospital, in the drinking shops, brothels and gambling halls, in the salons of the elegant, in the exchanges, socialist meetings, churches, religious revivals, the sectarian extasies, through love and hate, through the experience of passion in every form in his own body he would reap richer store of knowledge than text-books a foot thick give him. Then he would doctor the sick with real knowledge of the human soul.