Artificial Intelligence, both as a hope of making a substantial progress, and a fear of the unknown and unimaginable, has its roots in human dreams. These dreams were materialized by means of rational intellectual efforts. We see beginnings of such a process in Lullus’s fancies. Many scholars and enthusiasts participated in the development of Lullus’s art, ars combinatoria. Amongst them, Athanasius Kircher was distinguished. Gottfried Leibniz ended the period in which the idea of artificial intelligence had been shaped, and started a new one when artificial intelligence could be considered a part of science, according to today’s standards.