people to become truly thinking beings". However, Schweitzer was not an adept of mysticism or occultism, but of Age of Enlightenment rationalism. Anthony Storr stated about Rudolf Steiner's Anthroposophy: "His belief system is so eccentric, so unsupported by evidence, so manifestly bizarre, that rational skeptics are bound to consider it delusional.... But, whereas Einstein's way of perceiving the world by thought became confirmed by experiment and mathematical proof, Steiner's remained intensely subjective and insusceptible of objective confirmation." Robert Todd Carroll has said of Steiner that "Some of his ideas on education – such as educating the handicapped in the mainstream – are worth considering, although his overall plan for developing the spirit and the soul rather than the intellect cannot be admired". Translators have pointed out that the German term Geist can be translated equally properly as either mind or spirit, however, and that Steiner's usage of this term encompassed both meanings. The 150th anniversary of Rudolf Steiner's birth was marked by the first major retrospective exhibition of his art and work, 'Kosmos - Alchemy of the everyday'. Organized by Vitra Design Museum, the traveling exhibition presented many facets of Steiner's life and achievements, including his influence on architecture, furniture design, dance (Eurythmy), education, and agriculture (Biodynamic agriculture). The exhibition opened in 2011 at the Kunstmuseum in Stuttgart, Germany, Scientism Olav Hammer has criticized as scientism Steiner's claim to use scientific methodology to investigate spiritual phenomena that were based upon his claims of clairvoyant experience. Steiner regarded the observations of spiritual research as more dependable (and above all, consistent) than observations of physical reality. However, he did consider spiritual research to be fallible, and held the view that anyone capable of thinking logically was in a position to correct errors by spiritual researchers. Race and ethnicity Steiner's work includes both universalist, humanist elements and racial assumptions. Due to the contrast and even contradictions between these elements, one commentator argues: "whether a given reader interprets Anthroposophy as racist or not depends upon that reader's concerns". Steiner considered that by dint of its shared language and culture, each people has a unique essence, which he called its soul or spirit. He saw race as a physical manifestation of humanity's spiritual evolution, and at times discussed race in terms of complex hierarchies that were largely derived from 19th century biology, anthropology, philosophy and theosophy. However, he consistently and explicitly subordinated race, ethnicity, gender,