17 Who then are these new teachers who reject the merit of fasting? Is it not the voice of heathen who say, “Let us eat and drink?” whom the Apostle well ridicules, when he says: “If after the manner of men I have fought with beasts at Ephesus, what advantages it me if the dead rise not? Let us eat and drink, for tomorrow we die.” That is to say, What profited me my contention even unto death, except that I might redeem my body? And it is redeemed in vain if there is no hope of the resurrection. And, consequently, if all hope of the resurrection is lost, let us eat and drink, let us not lose the enjoyment of things present, who have none of things to come. It is then for them to indulge in meats and drinks who hope for nothing after death.
Source: Letters (New Advent)