Rudolf Joseph Lorenz Steiner was an Austrian philosopher, social reformer, architect, and esotericist. Steiner gained initial recognition at the end of the nineteenth century as a literary critic and published philosophical works including The Philosophy of Freedom. At the beginning of the twentieth century, he founded a spiritual movement, anthroposophy, with roots in German idealist philosophy and theosophy; other influences include Goethean science and Rosicrucianism.
In the first, more philosophically oriented phase of this movement, Steiner attempted to find a synthesis between science and spirituality; his philosophical work of these years, which he termed spiritual science, sought to apply the clarity of thinking characteristic of Western philosophy to spiritual questions, differentiating this approach from what he considered to be vaguer approaches to mysticism. In a second phase, beginning around 1907, he began working collaboratively in a variety of artistic media, including drama, the movement arts and architecture, culminating in the building of the Goetheanum, a cultural centre to house all the arts.