Being wise is to acquire all knowledge around us and to apply it in life. But if one thinks to acquire this humongous knowledge ones’ brain needs to be childish. Yes you are right! Wise and childish seems opposite words, but believe me they are not.
We use to hear that our brain was so powerful when we were child, now it use to work one tenth of that. Yes it’s true, we use to learn many things quickly, but as we grow up, our brain power get reduced( as brain occupied with many thoughts at a time). So a brain of child can grasp many things quite quickly. So if you want to become wise you need to become a child. Because childish brain can learn n store things quickly