Full Idea
We have no obligations of justice to other animals, because they are dissimilar to us.
Gist of Idea
We don't have obligations to animals as they aren't like us
Source
report of Chrysippus (fragments/reports [c.240 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 07.Ze.66
Book Reference
Diogenes Laertius: 'Diogenes Laertius', ed/tr. Yonge,C.D. [Henry G. Bohn 1853], p.306
A Reaction
"Dissimilar" begs questions. Some human beings don't seem much like me. How are we going to treat visiting aliens?