Augustine of Hippo : In fact, Solomon gives over the entire book of Ecclesiastes to suggesting, with such fullness as he judged adequate, the emptiness of this life, with the ultimate objective, to be sure, of making us yearn for another kind of life which is no unsubstantial shadow under the sun but substantial reality under the sun's Creator. For a person becomes as insubstantial as the insubstantiality that surrounds him, and it is by God's righteous decree that he, too, must pass away like a shadow. — City of God 20.3 Gregory the Dialogist : So Solomon bears witness, saying, "There are just men to whom many things happen, as though they had done the deeds of the wicked; and there are wicked, who are as secure as though they had the deeds of the just." God no doubt so ordains it of his inestimable mercy, that scourges should torture the just, lest their doings should elate them, and that the unjust should pass this life at least without punishment, because, by their evil doings, they are hastening onward to those torments that are without end. For that the just are sometimes scourged in no way according to their deserving is shown by this very history that we are considering. — Morals on the Book of Job, Book 24, Section 44 Jerome : "There is a futility that takes place on earth: sometimes there are righteous men who are treated as if they had done according to the deeds of the wicked; and there are wicked men who are treated as if they had done the deeds of the righteous. I declared, this, too, is vanity. "Amongst other vanities, which are borne in the world by good and bad events, even this I have found to be vain, since those things often happen to the righteous which ought to happen to the wicked, and the wicked live happily in the world that you would think that they were the more righteous! He gives the example in the Gospel of the rich courtier and poor Lazarus. [Cfr. Luc. 16, 19-31.] The seventy-second Psalm also talks about the matter of why bad things happen to good men and vice-versa. But where we read, 'there is a futility that takes place on earth', Symmachus translates this fully, saying, "it is difficult to understand what is done on earth". The Hebrews interpret the righteous who suffer wickedness as the sons of Aaron, and Manasseh, because the former died while sacrificing, and the latter was restored to power after much wickedness and captivity. — Commentary on Ecclesiastes