During the 2008 subprime mortgage crash, JP Morgan CEO Jamie Dimon wrote an email to the world-wide staff about the acquisition of Bear, I remember he put "May

During the 2008 subprime mortgage crash, JP Morgan CEO Jamie Dimon wrote an email to the world-wide staff about the acquisition of Bear, I remember he put "May you live in interesting times" in the email but I couldn't find any relevant explanation of the meaning of the quote. I asked a few Chinese/Vietnamese friends and they didn't seem to know the origin of it, either.