2 Now Greeks and Samaritans together argue against us thus. The dead man has fallen, and mouldered away, and is all turned into worms; and the worms have died also; such is the decay and destruction which has overtaken the body; how then is it to be raised? The shipwrecked have been devoured by fishes, which are themselves devoured. Of them who fight with wild beasts the very bones are ground to powder, and consumed by bears and lions. Vultures and ravens feed on the flesh of the unburied dead, and then fly away over all the world; whence then is the body to be collected? For of the fowls who have devoured it some may chance to die in India, some in Persia, some in the land of the Goths. Other men again are consumed by fire, and their very ashes scattered by rain or wind; whence is the body to be brought together again?
Source: Catechetical Lectures (New Advent)