After three years useless things are useful too.
More Japanese Proverbs:
Wine is water adulterated by foolish talk.Japanese
The sack of longing has no bottom.
Japanese
Plan your life at New Year's eve, your day at dawn.
Japanese
After three years even a disaster can be good for something.
Japanese
Apple blossoms are beautiful, but rice dumplings are better.
Japanese
He who smells does not know it himself.
Japanese