There is a road in the mountain of books, but there is no limit to learning the sea.

Learning is like sailing against the current. If you don't advance, you will retreat.

{Suggest him to look at the situation, including personality, preferences, etc. As for the rhetoric, you can euphemistically say that "online games are like the moon in the water, they are all virtual, and there is no need to ruin yourself for this invisible thing." If you want an epigram, then "God wants it to perish, he must first make it crazy"}