Abstract
The concepts of "spirit" and of "the spiritual" are prominent in F. L. Wright's thought about organic architecture. The present article tries to explore their relation to his architectural theory and practice. It evokes the architect's religious background and spiritualism influenced by New England Transcendentalism, and its relation with oriental and Japanese mysticism. Wright's concept of spirit may help understand better his architectural design, and especially its characteristics of "fusion," of transcending dualism, of evocating vital power and "Life," potentiality and intangibility, and its use of materials according to their "nature."