I think this sentence is more correct and positive:' All for one, I for all'. Our society needs to care and learn from each other. Mutual respect. Communicate with each other to improve, * * * create a better life and a harmonious society.' Every man for himself and the devil takes the hindmost' is selfish, of course, but man is a rational animal. They want something, but they can't get anything, and they over-satisfy their own needs. Advocating the concept that every man does not help himself and the devil takes the hindmost will harm society and have a negative impact on teenagers. So there is no positive concept.