I'm participating in a long-term campaign, playing as a Cleric. I have a pretty strong understanding of the world of 40k, despite only having read the Eisenhorn series.
I'm having difficulty maintaining a sense of strong faith in my character in the way I speak and act, however. Most of that difficulty is stemming from a lack of holy scripture or tales or saints to cite. As a religious studies student, I could quote real-world religious texts for hours, but 40k seems to offer close to nothing in terms of stories or ideas to be repeated in terms of everyday citizens' creeds. The Ecclesiarch Quotes on the Lexicanum can only take me so far.
This is more than a long winded request for quotes regarding the Imperial Creed. I'm looking for more - for information on anecdotes, on moral teachings, on lessons that can be taught or emulated through day-to-day work. Although quotes are nice, too.
P.S. - I can bull my way through moral teachings or creeds fine, but I'd rather there be some validity to them. Perhaps there are certain books I should read? Etc?