This is the first appearance in English of the complete text of the essay by Abraham which was published in German as Heft XI of Schriften zur angewandten Seelenkunde, Wien: Deutike, 1911. Basing his study chiefly on a biography by Franz Servaes, Abraham explains in the light of psychoanalytic concepts the psychological development, the inner and outer life, the art and the works of the artist Segantini. The dominance of the mother-son relationship is shewn in the psychic motivations of the life, as well as in the forms of the art, and in the themes of Segantini's paintings. To him earth, nature, and the Alpine landscape all represented his mother. The ambivalence of this relationship is shewn in his work, in his personality traits, his cycles of activity and depression and in the actions that brought about his early death. As one of the earliest attempts at psycho-analytic study of the artist, following Freud's study of Leonardo da Vinci, this essay deserves the attention of students of psycho-analysis.