the doctrine that this world is the best of all possible worlds
a tendency to expect the best, or at least, a favourable outcome
the belief that good will eventually triumph over evil
Doubt or disbelief of religious doctrines
The practice or philosophy of being a skeptic.
The doctrine that absolute knowledge is not possible
A studied attitude of questioning and doubt
A methodology that starts from a neutral standpoint and aims to acquire certainty though scientific or logical observation.