Perhaps not one religion contains all of the truth of the world. Perhaps every religion contains fragments of the truth, and it is our responsibility to identify those fragments and piece them together.

Ajihad: You are an enigma, Eragon, a quandary that no one knows how to solve.

Ah, pay no heed if your enemies laugh. They'll not be able to once you lop off their heads.

Anger is poison. You must purge it from your mind or else it will corrupt your better nature.

Are not all religions strange to those who stand outside of them?

Never ask an elf for help; they might decide your better off dead, eh?" (Orik) (Eldest) (Page 207)

My mind is the only sanctuary that has not been stolen from me. Men have tried to breach it before, but I've learned to defend it vigorously, for I am only safe with my innermost thoughts.