Ostwald became President of the "Deutscher Monistenbund" (Monistic Alliance), founded by Ernst Haeckel, in 1911. Ostwald (and other Monists) promoted eugenics and euthanasia, but only as voluntary choices with the intention of preventing suffering. Monist promotion of such ideas is suggested to have indirectly facilitated acceptance of the later Social Darwinism of the National Socialists. Ostwald died before the Nazis adopted and enforced the use of eugenics and euthanasia as involuntary government policies, to support their racist ideological positions. Ostwald's Monism also influenced Carl G. Jung's identification of psychological types.