A trust or confidence in the intentions or abilities of a person, object, or ideal from prior empirical evidence.
A conviction about abstractions, ideas, or beliefs, without empirical evidence, experience, or observation.
An obligation of loyalty or fidelity and the observance of such an obligation.
A religious or spiritual belief system.
a tendency to expect the best, or at least, a favourable outcome
the doctrine that this world is the best of all possible worlds
the belief that good will eventually triumph over evil