One must search diligently to find laudatory comments on education (other than those pious platitudes which are fodder for commencement speeches). It appears that most persons who have achieved fame and success in the world of ideas are cynical about formal education. These people are a select few, who often achieved success in spite of their education, or even without it. As has been said, the clever largely educate themselves, those less able aren't sufficiently clever or imaginative to benefit much from education.
Edward GibbonThe spectator and historian of [Belisarius's] exploits has observed, that amidst the perils of war, he was daring without rashness, prudent without fear, slow or rapid according to the exigencies of the moment; that in the deepest distress he was animated by real or apparent hope, but that he was modest and humble in the most prosperous fortune.
Edward GibbonThe division of the Roman world between the sons of Theodosius marks the final establishment of the empire of the East, which, from the reign of Arcadius to the taking of Constantinople by the Turks, subsisted one thousand and fifty-eight years in a state of premature and perpetual decay.
Edward GibbonThe nations, and the sects, of the Roman world, admitted with equal credulity, and similar abhorrence, the reality of that infernal art [witchcraft], which was able to control the eternal order of the planets, and the voluntary operations of the human mind. . . . They believed, with the wildest inconsistency, that this preternatural dominion of the air, of earth, and of hell, was exercised, from the vilest motives of malice or gain, by some wrinkled hags and itinerant sorcerers, who passed their obscure lives in penury and contempt.
Edward Gibbon