At no fixed point does one's body end and external nature begin. (religion-online.org)
«Externality» here, presumably, is being used in the sense that the common nature which is assumed to exist is taken to be external to the percipient, not in the sense that certain perceptual experiences of the percipient are taken to be observations of the passage of external nature (cf. PNI (71). (religion-online.org)
Because these decisions must be made under the stress of immediate feeling and have been divorced both from traditional artistic values of representation and from reliance on external nature, the artist is driven into a deeper communion with himself as the source of choice and action. (visual-arts-cork.com)