The struggle for existence in a universe we did not choose, and the burden of being a member of the only race which values objective, verifiable truth as an end in itself, makes us sometimes long for escape from reality -- in some cases through a literature of the fantastic, of marvelous dream worlds, of free-ranging fantasy. But we must not confuse that necessary escape with what is real. Permit me to suggest to the reader that it is a waste of his time and energy to play with fantasies that lack the literary and aesthetic charm of poetry and imaginative prose fiction.