Sagacious / suh-GAY-shus / adjective
Having or showing keen discernment, sound judgment, and farsightedness.
Edward's uncle, a sagacious scholar equally at home with Celtic myth and Eastern wisdom, declines his nephew's request to tell the story of Hamlet (it would come too close to home).
-- John Gross, New York Times, December 3, 1984
Others worked up sagacious-sounding comments about the French author that would serve until they could read some of his books themselves, or until the current interest fades.
-- Maureen Dowd, "Nobel Panel's Pick Keeps Cognoscenti Guessing", New York Times, October 18, 1985