One of the best examples of manic-depressive arrogance is the preacher in the movie Inherit the Wind
Inherit the Wind (1960) - IMDb
This movie is also an excellent example of how religion can actually encourage, mask, and condone manic-depressive arrogant behavior, with devastating results, just like in the movie.
NJ, you are right that manic-depression can consist of mood swings that happen quickly, but I think this can be misleading, in that it sounds like manic-depression episodes usually include rapid mood-swings from happy to sad and back again, which they often do not
include. Several good examples of mood-swings that are not from happy to sad and back again are the textbook examples from the bi-polar preacher in the movie.
Yes, the terms manic-depressive and bi-polar are interchangeable (mania and depression being the two 'poles' that 'polar' refers to).
All of this ties in nicely with the theme of this thread, which is the use of religion to justify negative and inappropriate behavior.