When an "expansion of consciousness" remains as a permanent possession of the individual (PD 57), we have wisdom. Such expansion is the essence of the poetic felt change of consciousness. Once acquired, however, its experience is not then accompanied by aesthetic pleasure.

"As long as men wanted to be wise and not simply 'knowing,'" we are reminded in Worlds Apart,"they assumed that you could not learn anything about nature (except for purely utilitarian purposes) without at the same time learning something about man and the God who created and sustains them both" (WA 21).

See in particular Poetic Diction, passim.