Just as we reject racism, sexism, ageism, and heterosexism, we reject speciesism. The species of a sentient being is no more reason to deny the protection of this basic right than race, sex, age, or sexual orientation is a reason to deny membership in the human moral community to other humans.

Every time you drink a glass of milk or eat a piece of cheese, you harm a mother. Please go vegan.

But if there were two dogs left in the universe and it were up to us as to whether they were allowed to breed so that we could continue to live with dogs, and even if we could guarantee that all dogs would have homes as loving as the one that we provide, we would not hesitate for a second to bring the whole institution of 'pet' ownership to an end.

It's really not rocket science. If animals are not mere things; if they have moral value, we cannot justify eating, wearing, or using them particularly when we have no better reason than palate pleasure or fashion. If you are eating, wearing, or using animals, then your actions say that you regard them as mere things, despite what your words say.

We should never present flesh as somehow morally distinguishable from dairy. To the extent it is morally wrong to eat flesh, it is as morally wrong - and possibly more morally wrong - to consume dairy

If you claim to 'love' animals but you eat animal products, you need to think critically about how you understand love.

None of that is necessary. It's not as if we're in a situation where it is us or them.There's something peculiar about talking about the moral status of animals, when we are killing and eating them for no reason whatsoever.