THESAURUS
thinker
Brahmin, Nestor, Solomon, authority, brainworker, casuist, cosmologist, dialectician, doctor, egghead, elder, elder statesman, expert, great soul, guru, highbrow, illuminate, intellect, intellectual, intellectualist, literate, logicaster, logician, logistician, lover of wisdom, mahatma, man of intellect, man of wisdom, mandarin, master, mastermind, mentor, metaphysician, oracle, philosophaster, philosophe, philosopher, philosophizer, pundit, rabbi, ratiocinator, rationalist, rationalizer, reasoner, rishi, sage, sapient, savant, scholar, seer, sophist, speculator, starets, syllogist, syllogizer, white-collar intellectual, wise man, wise old man
ROGET THESAURUS
thinker
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, Solon, Solomon, Nestor, Magi, second Daniel, man of learning, expert, wizard, wiseacre, bigwig, know-it-all, poor man's Einstein, venerable, reverenced, emeritus, barba tenus sapientes.