The arguments are clear and compelling, except when the author discusses abortion and insects. He fails to convince me that the unborn (humans) are not sentient and therefore not entitled to equal consideration. I still believe that veganism and the protection of the unborn go together. Francione also fails to put much thought into the possible rights of insects. For both of these issues, I think the precautionary principle needs to be applied: if you're not sure whether the organism is sentient, extend it the benefit of the doubt.