"You ask bitterly, like Pontius Pilate, "What is truth?" In such an hour what remains? I reply, "Obedience." Leave those thoughts for the present. Act — be merciful and gentle — honest; force yourself to abound in little services; try to do good to others; be true in the duty that you know. That must be right, whatever else is uncertain. And by all the laws of the human heart, by the word of God, you shall not be left to doubt. Do that much of the will of God which is plain to you, and "You shall know of the doctrine, whether it be of God.""
January 1, 1970
https://en.wikiquote.org/wiki/Doubt