My English is also poor, so I'd better help you.

Now I fell,cross something doesn't mean you have known it.

In some way , it must hurt others if one wants to live.

I thought that persons would become old, but not, persons will be old in a minute.

The fourth sentence is not Murakami at all Just say it!

If you get something, it will die. You lost it when you looked for it.

I translated it myself, don’t scold me if it’s not good