Not by Newton and certainly not in his hand (though described as 'autograph' in the Sotheby catalogue): according to Westfall ('Newton's Theological Manuscripts', 142) it is in that of John Wickins, his Cambridge room-mate from some time after 1663 to 1683, in which case the document presumably dates from that period (but it may of course be a copy of an older work). The piece is strongly anti-Roman Catholic in tone and reads the prophecy as foretelling the downfall of the Papacy in c. 60 years."http://dlib.nli.org.il/R/-?func=dbin-jump-full&object_id=NEWTON-096&silo_library=GEN01