The other difficulties with older texts is not just the different spellings or the now arcane words - but that the meaning of some of those recognisable words changed over time. C.S. Lewis wrote an excellent book that describing the changing meanings of a word (he termed ramifications) and dedicated a chapter to details this for several examples including ‘Nature’, ‘Free’ and ‘Sense’. Would highly recommend a read. https://en.wikipedia.org/wiki/Studies_in_Words