The conversation between human and AI assistant.
"What has passed is past" vs "What passed is past", which one is correct?
Oh, I've heard of those. Can you think of any expressions that emphasize learning from the past?
A common one is "learn from your mistakes." Another is "those who cannot remember the past are condemned to repeat it," which is a warning about the importance of understanding history and learning from past failures in order to avoid making the same mistakes in the future.