All 4 Uses of

intellectual

in

An Enemy of the People

That is, the doctrine you have inherited from your forefathers and proclaim thoughtlessly far and wide—the doctrine that the public, the crowd, the masses, are the essential part of the population—that they constitute the People—that the common folk, the ignorant and incomplete element in the community, have the same right to pronounce judgment and to, approve, to direct and to govern, as the isolated, intellectually superior personalities in it.†
Act 4

intellectually = in a manner that relates to intelligence

—but because he thinks what his superiors think, and holds the same opinions as they, People who do that are, intellectually speaking, common people; and, that is why my magnificent brother Peter is in reality so very far from any distinction—and consequently also so far from being liberal-minded.†
Act 4 *

But that is always the way, as long as a man retains the traces of common origin and has not worked his way up to intellectual distinction.†
Act 4

That is why I maintain that it is absolutely inexcusable in the "People's Messenger" to proclaim, day in and day out, the false doctrine that it is the masses, the crowd, the compact majority, that have the monopoly of broad-mindedness and morality—and that vice and corruption and every kind of intellectual depravity are the result of culture, just as all the filth that is draining into our Baths is the result of the tanneries up at Molledal!†
Act 4

Definitions:

(1) (intellectual as in: intellectual stimulation)
related to intelligence -- such as requiring, appealing to, or possessing intelligence
(2) (intellectual as in: She is an intellectual.)
a highly educated person interested in learning and exploring ideas -- sometimes while ignoring practical considerations