They're talking about things of which they don't have the slightest understanding, anyway. It's only because of their stupidity that they're able to be so sure of themselves.
And not only the pride of intellect, but the stupidity of intellect. And, above all, the dishonesty, yes, the dishonesty of intellect. Yes, indeed, the dishonesty and trickery of intellect.
The greater the stupidity, the greater the clarity. Stupidity is brief and guileless, while wit equivocates and hides. Wit is a scoundrel, while stupidity is honest and sincere.