Why has Henry Clerval's father allowed him to go to Ingolstadt?

Clerval convinces his father to allow him to join Frankenstein at the university, studying classical and Eastern languages:

Clerval was no natural philosopher. His imagination was too vivid for the minutiae of science. Languages were his principal study; and he sought, but acquiring their elements, to open a field for self-instruction on his return to Geneva. Persian, Arabic, and Hebrew, gained his attention, after he had made himself perfectly master of Greek and Latin. (I:5:14)