"much too perspicacious to be taken in by such a spurious argument""observant and thoughtful, he was given to asking sagacious questions""a source of valuable insights and sapient advice to educators"
2. mentally acute or penetratingly discerning;
"too clear-eyed not to see what problems would follow""chaos could be prevented only by clear-sighted leadership""much too perspicacious to be taken in by so spurious an argument"