So, please, oh please, we beg, we pray, go throw your TV set away, and in its place you can install, a lovely bookcase on the wall.

This quote is telling people that instead of having a television set in their home, they should replace it with a bookcase on the wall. By getting rid of their TV, they’ll have more space in their home and will also be using their time more productively, as books will give them more knowledge than TV. It’s almost like a plea for people to take the time to read more instead of just spending time watching TV.