1. The sentence "Pay attention to everything" means that in our life, as long as we pay attention to observation, we can gain knowledge from some small places and ordinary things.

2. The sentence "Pay attention to everything and learn" comes from the famous saying in A Dream of Red Mansions: "You can never tire of singing good songs and reading good books. Reading is expensive in doubt, and doubt can teach. Reading silently is easy to think, reading aloud is easy to remember. If you start reading a good book, you will get a good friend; Rereading a good book is like knowing an old friend. Pay attention to study everywhere, and the three of them have my teacher. "

3, but this sentence is far less famous than "the world is clear and all-knowing, and human feelings are the articles". The couplet "Everything is learned, and people's understanding is an article" is a traditional concept of Confucianism, which expresses the side of Confucianism's entry into the WTO and is also one of the feudal moral standards.