"[M]oral value is based upon the individual’s experience of pain (defined broadly to cover all types of suffering whet…"

"We all, thank goodness, feel a natural spark of sympathy for the sufferings of others. We need to catch that spark an…"

"Two slightly different, but not often clearly distinguished usages of "speciesism" should be noted. But more strictly…"

"The 1960s revolutions against racism, sexism and classism nearly missed out the animals. This worried me. Ethics and …"

"Sometimes captured from the great arboreal freedom of their jungle homes, monkeys are closely confined in cages only …"

"Our first moral concern should always be with the individual who is the maximum sufferer."

"Differences in reaction to toxic substances vary considerably between species so that the value of these tests remain…"

"… it is less imperatively my duty to give pleasure than it is to alleviate pain. If someone else is not actually suff…"

"Their experiences may be more simple than ours, but are they less intense? Perhaps a caterpillar’s primitive pain whe…"

"It is always wrong to cause pain to A merely in order to increase the pleasure of B."