The ontological ambiguity of psychoanalysis is particularly suitable for combining the non-reductive materialism of neuroscience with positions of idealistic philosophy. With this background, the gradual completion of the absolute idea will be traced. I assume, with Hegel, that the ideal is the ideal side of matter, and that the matter is the material side of the ideal. There is a dialectical interweaving of matter and spirit, from which further differentiations of the ideal and the material arise. On the side of the ideal, the Lacanian registers of the real, the imaginary and the symbolic unfold, which I expand to include the dimension of the atmosphere (i.e., the feelings that are projected into space) and the quality of the phenomenal (i.e., the non-linguistic). It is a dialectical process that continues in the symbolic until the development of absolute knowledge or ultimate justification and then returns - in a Borromean circle, as absolute idea - to the real. Hegel argued that the practical implementation of the absolute idea consists of behaviour oriented towards the idea of humanity, i.e., the highest good. The final discussion here is about the relationship between the highest good and evil or the natural and pure will.