"Your question, my dear girl, is not an easy one to answer, for moral philosophy does not know a more important one, or a more difficult one to decide; it is a lesson which lasts throughout life. I will tell you in a few words that we call prejudice every so-called duty for the existence of which we find no reason in nature."
"Then nature must be the philosopher's principal study?"
"Indeed it is; the most learned of philosophers is the one who commits the fewest errors."
"What philosopher, in your opinion, has committed the smallest quantity of errors?"
"Socrates."
"Yet he was in error sometimes?"
"Yes, in metaphysics."
"Oh! never mind that, for I think he could very well manage without that study."
"You are mistaken; morals are only the metaphysics of physics; nature is everything, and I give you leave to consider as a madman whoever tells you that he has made a new discovery in metaphysics. But if I went on, my dear, I might appear rather obscure to you. Proceed slowly, think; let your maxims be the consequence of just reasoning, and keep your happiness in view; in the end you must be happy."
"I prefer the lesson you have just taught me to the one which M. Baletti will give me to-morrow; for I have an idea that it will weary me, and now I am much interested."