[jimbo123]

Quaid assumes Houston "was bipolar, a manic-depressive. He had a brother who committed suicide and a sister who died in a mental institution. So I think depression is something he battled with all his life. He was an alcoholic, and I think he used alcohol to medicate himself against emotional swings. You know how it is when you're like that: There's the meal, and then there's the check. There's really nothing in between."

[Servant of the Nine]

Quaid assumes Houston "was bipolar, a manic-depressive.

I think that is a very reasonable guess, based on the way he lived his life.

So9