Marcellus ponders this for a long moment before adding, "The real question is, what do you want to be done with this knowledge? Have it used in the Order? Have it used by someone else? Keep it for the future, unused for now? That seems to be what the three contestants offer you. But no matter which one you choose, you are basically giving away the responsibility to someone else."
"Is that what you want? Give someone else the final say as to what should be done with the knowledge? You started on this path when you stole these books. Because you believed this knowledge brought danger. As you hint at, there is another choice. Or perhaps two more."
"If you truly believe this knowledge is dangerous, you can destroy it. Burn the books and scatter the ashes."
"Or you can keep it to yourself and decide with whom you will share it. That brings its own share of danger, of course. Others know it exists, so they will come after it."
Marcellus sighs, then shakes his head, "If it were me, I think I would destroy it. But the choice is yours, not mine. And thank God for that."