It is narrated of S. Thomas that when at Paris it happened that having to lecture at the University on a subject which he had commenced the day before, he rose at night to pray as was his wont, but discovered that a tooth had suddenly pushed its way through his gums in such a way that he could not speak. His companion suggested that since it was an inopportune time for procuring assistance a message should be sent to the University stating what had happened and pointing out that the lecture could not be given till the tooth had been removed by a surgeon. But S. Thomas, reflecting upon the difficulty in which the University would be placed, considering also the danger which might arise from the removal of the tooth in the way suggested, said to his companion: I see no remedy save to trust to God's Providence. He then betook himself to his accustomed place of prayer, and for a long space besought God with tears to grant him this favour, leaving himself entirely in His hands. And when he had thus prayed he took the tooth between his fingers, and it came out at once without the slightest pain or wrench, and he found himself freed from the impediment to his speech which it had caused. This tooth he carried about with him for a long time as a reminder of an act of Divine loving-kindness such as he was anxious not to forget, for forgetfulness is the mother of ingratitude; he wished it, too, to move him to still greater confidence in the power of prayer which had on that occasion been so quickly heard (see _Vita S. Thomae_, Bollandists, March 7, vol. i., 1865, pp. 673, 704, 712). _S. Augustine:_ But temporal things are sometimes for our profit, sometimes for our hurt. For many poverty was good, wealth did them harm. For many a hidden life was best, high station did them harm. And on the other hand money was good for some, and dignities, too, were good for them--good, that is, for those who used them well; but such things did harm when not taken away from those who used them ill. Consequently, brethren, let us ask for these temporal things with moderation, being sure that if we do receive them, He gives them Who knoweth what is best suited to us. You have asked for something, then, and what you asked for has not been given you? Believe in your Father Who would give it you if it were expedient for you (_Sermon_, lxxx. 7).