RAPHAEL VASSALLO: Philosopher, ethicist and Animal Liberation exponent Peter Singer talks about the need to ‘expand the circle of moral concern’: to include humans, animals, and ‘all sentient beings, everywhere’… RV: In your 1975 book ‘Animal Liberation’, you argued that human beings are guilty of ‘speciesism’: a tendency to attach undue importance to their own … Continue reading Peter Singer: ‘Pain is pain: Whether you’re a human, or any other animal’