The vegan diet, especially buying organically produced plant foods, does solve more of the ethical problems about eating than any other. But I admit that it is not for everyone, and it will take a long time before it becomes widespread. So I don’t want to give the impression that it is the only thing one can do to eat ethically. Just avoiding factory farmed products is a big step in the right direction, even if you continue to eat a moderate quantity of organically produced, pasture raised, animal products.
~ Peter Singer (April 27, 2009)