First he slowly entered the mark, then contemplated it with his head on one side,--the mark must be artistic,--closed the register, and asked with great sarcasm, "_Aba_, and why so, sir ?" "Because I can't conceive, Padre, how one can be absent from the class and at the same time recite the lesson in it.

Your Reverence is saying that to be is not to be." "_Naku_, a metaphysician, but a rather premature one! So you can't conceive of it, eh?
_Sed patet experientia_ and _contra experientiam negantem, fusilibus est arguendum_, do you understand?
And can't you conceive, with your philosophical head, that one can be absent from the class and not know the lesson at the same time?
Is it a fact that absence necessarily implies knowledge?
What do you say to that, philosophaster ?" This last epithet was the drop of water that made the full cup overflow.

Placido enjoyed among his friends the reputation of being a philosopher, so he lost his patience, threw down his book, arose, and faced the professor.
"Enough, Padre, enough! Your Reverence can put all the marks against me that you wish, but you haven't the right to insult me.

Your Reverence may stay with the class, I can't stand any more." Without further farewell, he stalked away.
The class was astounded; such an assumption of dignity had scarcely ever been seen, and who would have thought it of Placido Penitente?
The surprised professor bit his lips and shook his head threateningly as he watched him depart.

Then in a trembling voice he began his preachment on the same old theme, delivered however with more energy and more eloquence.