Information fills and enlarges the pores.

Ignorance that is content with itself is turgid and saturated.

It will take up no more, no matter what is offered.
This is the form of folly which the preacher admonishes us to answer in kind.

The effort to force the truth upon the charged sponge is an exercise of mental muscle akin to the beating of the air, deprecated by the Apostle to the Gentiles.
"Such stolid stupidity is incredible in a land where education is compulsory!" exclaimed a friend who, having talked himself out of breath in the effort to persuade a rich vulgarian into belief of one of the simplest of philosophical principles, had the mortification of seeing that his opponent actually flattered himself with the idea that _he_ had come off victorious in the wordy skirmish.

"One would have thought that living where he does, and as he does, he would have taken in such knowledge through the pores." "Not if the pores were already full," was a retort that shed new light into the educated mind.
Folly has a law and language of its own with which intelligence intermeddles not.