What is there about the notion of a person, at law, that makes every living member of the species Homo sapiens a person, irrespective of their mental capacities, but excludes every nonhuman animal - again, irrespective of their mental capacities?
Peter SingerAccording to the Dominant Western tradition, the natural world exists for the benefit of human beings.
Peter SingerAn animal experiment cannot be justifiable unless the experiment is so important that the use of a brain-damaged human would be justifiable.
Peter Singer