FOOTNOTE IN KANT

Deficiency in judgment is properly that which is called stupidity; and for such a thing we know no remedy. A dull or narrow-minded person, to whom nothing is wanting but a proper degree of understanding, may be improved by tuition, even so far as to deserve the epithet of learned. But as such persons frequently labor under a deficiency in the faculty of judgment, it is not uncommon to find men extremely learned, who in the application of their science betray to a lamentable degree this irremediable want.

Critique of Judgment (Buffalo: Prometheus Books, 1990) , p. 98.