Giving then a portion of their time to a finished knowledge of the latin and Greek, the rest might be appropriated to the modern languages, or to the commencement of the course of science, for which they should be destined.
From this it is suggested that it is important to know Latin and Greek as a scholar in those times due to the large volumes of books that are still written in those languages and yet to be translated. It shows that in order to continue an education in the field of science one must also be able to understand the "language of science" which is often not English.
Eric Yu