Confucius said, "Learn for the sake of learning. Those who know it are not as good as those who love it, and those who love it are not as good as those who enjoy it."
explain
For learning, people who know how to learn are not as good as those who like to learn; People who like learning are not as good as those who like learning. For example, learning knowledge or skills is not as fast as those who love it, and those who love it are not as fast as those who enjoy it.
Posted on Baidu Encyclopedia, quite authoritative. O(∩_∩)O~