"When I became a vegan, I didn't draw an X through everything marked 'Animalia' on the tree of life. And when I pick out my dinner, I don't ask myself: What do I have to do to remain a vegan? I ask myself: What is the right choice in this situation? Eating ethically is not a purity pissing contest, and the more vegans or vegetarians pretend that it is, the more their diets start to resemble mere fashion — and thus risk being dismissed as such."
— Christopher Cox, from an op-ed in Slate arguing that while oysters are considered animals, even strict vegans should feel comfortable eating them.