Interview of Peter Singer

It seems to me Peter Singer is bringing 'up' the status of animals to that of the human or bringing 'down' the level of human to that of the animals. Except for speciation, there don't seem to be any philosophical difference between human and animal.

But I also admire his sincerity when he admits that he is not able to fully carry though the logical demands of his ethical view. But I wonder if he struggles with guilt then. And how much of that haunts him.