I think part of what makes writing good is the conflict and very often that conflict has to come from within yourself. I've had characters say plenty of stuff that I don't believe but ultimately, it's more the wishy wash 'I kinda believe this' that's more common.
Like:
"All who raise their fangs against me must perish, for it is the fate of the weak attacking the strong."
"I am queen! I am Mother! They should do as I say or die trying!"
"Forgiveness is a virtue just as patience, humility and charity."
"I do not care for the lives of others, dead or living. Whether their graves are defiled or I stake them through the heart is irrelevant unless it benefits me in some manner."
"I am an observer. I must be ambivalent and therefore emotion is inefficient, useless... a waste."
"Kindness to others is a natural state of being. It is you are incorrectly interpreting your own desires, rather than the world forcing you to be this way."
"If the world is ending why do we care?"
You see what I mean? It's always the thought provoking stuff that I get characters to say because then you have to actually engage with the book. Not just the reader but also the writer themselves.
