Thus, it is manifest that man's best and surest teacher is God, the Source and Principle of all truth; and the only-begotten Son, who is in the bosom of the Father, the Way, the Truth, and the Life, the true Light which enlightens every man, and to whose teaching all must submit: "And they shall all be taught of God."( 8)
His quam longissime possent egredi iussis, cum iam ex diei tempore coniecturam ceperat in castra perventum, isdem sublicis, quarum pars inferior integra remanebat, pontem reficere coepit.vatican.va vatican.va