Belief

Belief is an acceptance of something to be true or real, a condition of the mind when it feels assured about truthfulness of some idea, statement, theory, doctrine etc. It is an acceptance that something exists, and also a religious conviction. Belief in someone or something is trust, faith, or confidence in them.

Belief is a word of various application, but properly definable as that which lies at the heart of a man or a nation's convictions, or is the heart and soul of all their thoughts and actions, "the thing a man does practically lay to heart, and know for certain concerning his vital relations to this mysterious universe, and his duty and destiny there."

The holder of a belief is not necessarily its creator, that is why it is different from opinion or view.