Previously, psychology was developed as a speculative discipline, connected to philosophy, addressing the distinction between soul and body and the particularities of the soul. Plato, Aristotle, Augustine, Aquinas, Descartes, Locke, Hume, Leibniz, Spinoza, Schelling and many others all have explored features of the soul. Establishing psychology as a scientific discipline was not the task of establishing something out of nothing, but, rather, out of too many incongruent elements. What could be the important steps to take?