Why Man Cannot Believe in Man

Wherever, in the relationships of men to men, belief in the strict sense [that someone should accept something unreservedly as true without any other supporting evidence, for the sole reason that someone says so] is demanded or practiced, something essentially inhuman is taking place, something that is contrary to the nature of the human mind, something that is equally incompatible with its limitations and its dignity. The ancients expressed the same idea in their more temperate manner: The cognition of one man is not by nature so correlated with the cognition of another man that the former may be governed by the later. That is to say: no mature man is by nature so spiritually inferior or superior to another that the one can serve the other as an absolutely valid authority.
— Josef Pieper, Faith, Hope, Love, p. 33