Figure 1From: From the scala naturae to the symbiogenetic and dynamic tree of lifeThe "Moral Tree", published posthumously in 1505 in a book authored by Raymon Llull (1232-1315). This Spanish philosopher and Christian theologian mixed up natural phenomena with supernatural religious dogma and hence became the spiritual father of a medieval ideology called "Llullism" [part of a woodcut, adapted from ref. 8].Back to article page