With the exception of a few modifications in detail, what takes shape here and persists are certain essential connections in classical medicine, much more solid than nosographic links, perhaps because they have their roots in experience rather than theory, and because frenzy and the heat of fevers, mania and furious agitation, melancholy and the quasiinsular isolation of delirium, dementia and the disorders of the spirit had long had their place in the popular imagination and in dreams.