The metaphorcal mappings in dreams that Lakoff describes add a new category to the various "ready-made" elements of dreams identified by Freud: calculations, speeches, sound associations, and cultural symbols. The distinction between ready-made and newly created dream images seems to me analogous to Pinker's distinction between regular and irregular grammatical forms. Hence, the same brain system may do the job of choosing between then and this same system may be relaxed to allow writers and artists to create. (Norman N. Holland)