Through the truthfulness of that God as the author of all truth he derives a guarantee for our perceptions in so far as these are clear and distinct.
That bread and wine should become flesh and blood and yet not lose the properties of bread and wine was, he held, contradictory to reason, and therefore irreconcilable with the truthfulness of God.
The principal charm of his "Minutes" lies in the amusing details he has to recount about his personages, and in the plainness and truthfulness that he permits himself in face of established reputations.
The work of Marco Polo is the most valuable narrative of travels that appeared during the middle ages, and despite a cold reception and many denials of the accuracy of the record, its substantial truthfulness has been abundantly proved.
Many ivory figures of men, women and animals -are known from Nekhen (Hieraconpolis) and Abydos; and they all show the same school of work, simple, dignified, observant, and with ~an air which places them on a higher plane of truthfulness and precision than later art.