Many much-learned men have no intelligence.

[Πολλοὶ πολυμαθέες νοῦν οὐκ ἔχουσιν.]

Democritus (c. 460 BC - c. 370 BC) Greek philosopher

Frag. 64 (Diels) [tr. Freeman (1948)]
    (Source)

Diels citation "64. (190 N.) DEMOKRATES. 29."; collected in Joannes Stobaeus (Stobaios) Anthologium III, 4, 81. Freeman notes this as one of the Gnômae, from a collection called "Maxims of Democratês," but because Stobaeus quotes many of these as "Maxims of Democritus," they are generally attributed to the latter.

Alternate translations:

• "There are many who know many things, yet are lacking in wisdom." [tr. Bakewell (1907)]
• "Many who have learned much possess no sense." [tr. Barnes (1987)]
• "Many who have learned a lot do not have a mind." [tr. @sentantiq (2018)]
• "Many, though widely read, possess no sense." [Source]