Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

500. Sage — N. sage, wise man; genius; master mind, master spirit of

the age; longhead†, thinker; intellectual, longhair. authority, oracle, luminary, shining light, esprit fort, magnus Apollo [Lat.], Solon, Solomon, Nestor, Magi, second Daniel. man of learning &c 492; expert &c 700; wizard &c 994. wiseacre [Iron.], bigwig, know-it-all; poor man's Einstein. Adj. venerable, reverenced, emeritus. Phr. barba tenus sapientes [Lat.].