Although each of Owliver's parents has ideas for what he should do when he grows up and they expose him to lessons and experiences of various kinds, Owliver makes his own decision about what he is going to be, and it's neither a doctor nor a lawyer!
When you are growing up, there are two institutional places that affect you most powerfully -- the church, which belongs to God, and the public library, which belongs to you. The public library is a great equalizer.