a doctrine held by a member of a religion at variance with established religious beliefs
A controversial or unorthodox opinion held by a member of a group, as in politics, philosophy or science.
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.