"We have a moral obligation to prevent suffering, wherever it occurs, as long as we can do so without comparable sacrifice."

"The greatest good for the greatest number should be our guiding principle."

"Killing a disabled infant is not morally equivalent to killing a person. Very often it is not wrong at all."

"If we want to be truly ethical, we need to be rational and impartial in our moral judgments."

"We are facing a moral crisis of unprecedented proportions if we continue to ignore the suffering of animals."