Kettner was himself originally inspired by the organicism of Constantin Brunner. The structure is a noted example of Spanish Organicism. In other words he was a proponent of a variety of organicism. He has been described as a pioneer of organicism. Montgomery was an advocate of non-Darwinian evolution and organicism. Thomas Hobbes arguably put forward a form of organicism. The work of Haldane was an influence on organicism. From these influences, he retained two main principles&colon; organicism and cerebral localisations. Gini was a proponent of organicism and applied it to nations. Gini was a proponent of organicism and saw nations as organic in nature. Today, organicism might be called systems theory. According to Ernst Mayr, Ritter introduced the third school of thought&colon; organicism. Organicism has some intellectually and politically controversial or suspect associations. A number of biologists in the early to mid-twentieth century embraced organicism. Organicism believed that life was interrelationships between living things, living in a complex web.