But if you take science as such protection, you will fall into the unfathomable and boundless ocean, which is full of reefs, and you can never go back.Whenever I see a person who loves knowledge, indulging in its charm, unable to stop from one subject to another, I feel that he is like a child picking up shells by the sea. The good shells were thrown away and picked up again until they were overwhelmed by the vast number, unable to choose, so they had to throw them all away and leave empty-handed.