Y: I suppose you also deem it a crime to drink, as you destroy myriads of animals in the water of every draught? Z: I consider this an evil, but not … - Lewis Gompertz

The economy of life seems to be that man and most animals if in peace and plenty, would soon overstock the world with their produce, and that most species continue to increase till they exceed the food provided for their support, or till killed to make way for others. Some moralists admire this system of one animal devouring another as they say by this means more can live, and consequently they infer more happiness results. But that more can live by this means we doubt, and still more that the degree of happiness is increased; first, they must convince us that life generally abounds in pleasure, as to us the reverse seems to be the fact; though necessarily admitted by the Almighty for reasons beyond our reach to discover. If we look at the forest, the ocean, the air, or a drop of water in a microscope, all is found teeming with life, and to a superficial eye all is in active enjoyment; but a nice observer soon discovers the universal discord, trepitude and destruction proceeding everywhere: the strong oppressing the weak, one party half starved and ravenously pursuing another, some terrified devoted victims vainly endeavouring to escape the hungry jaws of their pursuer, some perished by want, others devoured alive, thousands destroyed every instant, and few allowed to remain, but those few so nicely balanced as to preserve the species through numerous ages; every fly or reptile, however contemptible in the eyes of some persons being possessed of a pedigree more remote than the most ancient nobility can emblazon, great grandfathers and mothers from time immemorial; and notwithstanding they are in the midst of their enemies, including man, who use every means and violence to destroy them; here by the care of God, they remain preserved from thousands of years back, as uninjured as if in a bandbox!!

Axiom 8. That the importance of any action is measured by the degree of pleasure or pain that it causes or prevents.

The number of animals which can be brought into existence probably being limited, or the number destined to inhabit our globe probably being so; it appearing reasonable to think that no new animals are created by being born, nor destroyed by being killed, but that being born is merely becoming conscious, and death or sleep being only a loss or suspension of consciousness, [...] the identity never being destroyed.