What knowledge does Abbe give Dantes during their time together? (9)

From the text:

“Alas, my boy,” said he, “human knowledge is confined within very narrow limits; and when I have taught you mathematics, physics, history, and the three or four modern languages with which I am acquainted, you will know as much as I do myself. Now, it will scarcely require two years for me to communicate to you the stock of learning I possess.”