Matthew Scully said this quote

Though reason must guide us in laying down standards and laws regarding animals, and in examining the arguments of those who reject such standards, it is usually best in any moral inquiry to start with the original motivation, which in the case of animals we may without embarrassment call love. Human beings love animals as only the higher love the lower, the knowing love the innocent, and the strong love the vulnerable. When we wince at the suffering of animals, that feeling speaks well of us even when we ignore it, and those who dismiss love for our fellow creatures as mere sentimentality overlook a good and important part of our humanity.

~ Matthew Scully

When you start with a necessary evil, and then over time the necessity passes away, what's left?

~ Matthew Scully

If we are defined by reason and morality, then reason and morality must define our choices, even when animals are concerned. When people say, for example, that they like their veal or hot dogs too much to ever give them up, and yeah it's sad about the farms but that's just the way it is, reason hears in that the voice of gluttony. We can say that what makes a human being human is precisely the ability to understand that the suffering of an animal is more important than the taste of a treat.

~ Matthew Scully

When we shrink from the sight of something, when we shroud it in euphemism, that is usually a sign of inner conflict, of unsettled hearts, a sign that something has gone wrong in our moral reasoning.

~ Matthew Scully