St. Francis

"If you have men who will exclude any of God's creatures from the shelter of compassion and pity, you will have men who will deal likewise with their fellow men." - St Francis of Assisi

I think the quote means that if you abuse any of God's creation then you will abuse your fellow peers, and men around you. I totally agree with this quote because if you abuse animals then you are most likely to treat the people around you in the same way.