Lastly, to the prognostics of time to come; which are naturally but conjectures upon experience of time past; and supernaturally, divine revelation; the same authors of the religion of the Gentiles, partly upon pretended experience, partly upon pretended revelation, have added innumerable other superstitious ways of divination; and made men believe they should find their fortunes, sometimes in the ambiguous or senseless answers of the priests at Delphi, Delos, Ammon, and other famous oracles; which answers were made ambiguous by design, to own the event both ways; or absurd, by the intoxicating vapour of the place, which is very frequent in sulphurous caverns: sometimes in the leaves of the Sybils; of whose prophecies, like those perhaps of Nostradamus (for the fragments now extant seem to be the invention of later times), there were some books in reputation in the time of the Roman Republic: sometimes in the insignificant speeches of madmen, supposed to be possessed with a divine spirit, which possession they called enthusiasm; and these kinds of foretelling events were accounted theomancy, or prophecy: sometimes in the aspect of the stars at their nativity; which was called horoscopy, and esteemed a part of judiciary astrology: sometimes in their own hopes and fears, called thumomancy, or presage: