A statement of belief is a written or spoken declaration of one's personal convictions about a particular subject. Synonyms for this term include creed, manifesto, doctrine, philosophy, ideology, opinion, conviction, tenet, principle, and dogma. A creed is a formal statement of religious belief, while a manifesto is a public declaration of political or social beliefs. A philosophy refers to a set of principles that underlie one's worldview, while an ideology is a set of ideas that form the basis of political or social beliefs. A tenet and principle both refer to core beliefs that guide one's actions, while dogma refers to a set of beliefs that are considered to be incontrovertible truths.