A certain dwarf has been taken by a strange mood due to a lack of chairs and clean water. I designated a new water-hole for them and built him seven chairs, but he is still depressed.
How do I make him happy again or is there I way I can prevent him from sitting on the chairs, drinking clean water, eating hard earned food, and not doing any work? (ie try him and have him executed/banished?)
EDIT:
The situation has worsened. He has gone stark raving mad!