The Happy Crucifixion combines Tarot card 22, the World, with the symbolism of the Rose Cross. The World Dancer of Tarot card 22 illustrates the ultimate enlightenment attainment: cosmic consciousness. The Rosy Cross is associated with the cosmos because we can fold it into a (three-dimensional) cube.
Modern psychology emancipated itself from philosophy in the second half of the 19th century to find more effective ways of dealing with mental abnormalities. It made its first public appearance as Sigmund Freud’s psychoanalysis.