From now on, I will no longer mention the past, pain or happiness, life will not bring it away, death will not take it away.
--Haizi
When we lose one thing after another and look for it again, we find that those things have deteriorated. If so, would you still want it? As Haizi said,
Pain or happiness will not be taken away by death, so there is no need to remember youth. You can't just live in the past.