“Then why do you want to know?""Because learning does not consist only of knowing what we must or we can do, but also of knowing what we could do and perhaps should not do.”

“This has nothing to do with realism (even if it explains also realism). A completely real world can be constructed, in which asses fly and princesses are restored to life by a kiss, but that world, purely possible and unrealistic, must exist according to structures defined at the outset (we have to know whether it is a world where a princess can be restored to life only by the kiss of a prince, or also by that of a witch, and whether the princess's kiss tranforms only frogs into princes or also, for example, armadillos).”

“And when someone suggests you believe in a proposition, you must first examine it to see whether it is acceptable, because our reason was created by God, and whatever pleases our reason can but please divine reason, of which, for that matter, we know only what we infer from the processes of our own reason by analogy and often by negation.”

“It is necessary to create constraints, in order to invent freely. In poetry the constraint can be imposed by meter, foot, rhyme, by what has been called the "verse according to the ear."... In fiction, the surrounding world provides the constraint. This has nothing to do with realism... A completely unreal world can be constructed, in which asses fly and princesses are restored to life by a kiss; but that world, purely possible and unrealistic, must exist according to structures defined at the outset (we have to know whether it is a world where a princess can be restored to life only by the kiss of a prince, or also by that of a witch, and whether the princess's kiss transforms only frogs into princes or also, for example, armadillos).”

“I did not know then what Brother William was seeking, and to tell the truth, I still do not know today, and I presume he himself did not know, moved as he was solely by the desire for truth, and by the suspicion - which I could see he always harbored - that the truth was not what was appearing to him at any given moment.”

“If you want to become a man of letters and perhaps write some Histories one day, you must also lie and invent tales, otherwise your History would become monotonous. But you must act with restraint. The world condemns liars who do nothing but lie, even about the most trivial things, and it rewards poets, who lie only about the greatest things.”

“The older I grow and the more I abandon myself to God's will, the lessI value intelligence that wants to know and will that wants to do; andas the only element of salvation I recognize faith, which can wait patiently, without asking too many questions.”