Set him on fire.
You have a Psycopath as a boss. They use extreme swings in emotional outbursts to slowly break down their underlings. I would do your best to either transfer to another area away from him or look for another position in another firm. <br />
Psycopaths destroy people.
This Utube video might give you some insight:: https://www.youtube.com/watch?v=tlB1pFwGhA4