But I fancy that even now you will not be satisfied, for you will think that you may be mistaken, and that these interior matters are difficult to investigate. In reality, what has been said will be sufficient for anyone who has experienced this blessing, for there is a great difference between the false and the true. But I will give you a clear indication which will make it impossible for you to go wrong or to doubt if some favour has come from God; His Majesty has put it into my mind only to-day, and I think it is quite decisive. In difficult matters, even if I believe I understand what I am saying and am speaking the truth, I use this phrase "I think", because, if I am mistaken, I am very ready to give credence to those who have great learning. For even if they have not themselves experienced these things, men of great learning have a certain instinct118 to prompt them. As God uses them to give light to His Church, He reveals to them anything which is true so that it shall be accepted; and if they do not squander their talents, but are true servants of God, they will never be surprised at His greatness, for they know quite well that He is capable of working more and still more. In any case, where matters are in question for which there is no explanation, there must be others about which they can read, and they can deduce from their reading that it is possible for these first-named to have happened.
118 [Lit.: "a something": the Spanish is un no sé qué, an expression corresponding to the French un je ne sais quoi.]