The classic sentence that you will learn to cherish only after you lose it is as follows:

1. Regret is a spirit-consuming emotion. Regret is a greater loss than loss, because what you lose is just a person who doesn't love you, while regret loses a person who loves you.

2. Please cherish the people around you who love you silently. Perhaps, one day when he really leaves, you will find that it is you who cannot live without each other, not him.

3. Don’t feel sorry for what you have lost, but cherish what you have now. Don't wait until you've lost it before you know how to cherish it; don't wait until you're hurt before you know how to forgive; don't wait until you get wet before you know how to shield yourself; don't wait until you're terminally ill before you know how to take care of yourself, because there are many things to wait for in life and you can't do it again.

4. Life is often so beautiful that we forget its existence until one day it is suddenly lost.

5. People are always like this. They don’t care much when they have it, but they only cherish it when they lose it.

6. The farthest distance in the world is not the distance between trees, but the branches growing from the same root but unable to depend on each other in the wind.

7. Cherish today and seize the moment, because tomorrow or the accident, I don’t know which one will come first.

8. Don’t learn to cherish after losing. This is true for love, family, and friendship.

9. Don’t cry over an overturned milk bottle, because you have a more important next thing to do.

10. Life is like a box of chocolates. You never know what flavor you will taste. Eat something bitter every day to avoid forgetting the bitter taste.

11. Sometimes, things happen unexpectedly and catch people off guard. This doesn't mean we haven't tried hard. It’s just that life is always full of unexpected things.

12. Don’t ignore its existence when you have it, and regret it when you lose it.

13. You never know which one will come first, tomorrow or the accident, so cherish everything you have now.

14. Some people don’t know how to cherish until they lose it, but once they lose it, they are lost forever.

15. Life is like a journey. You don’t know where you will encounter something, so you must be careful every step of the way.