QQC: Rhinoceros- Act 2

This weekend, I read all of Act 2 of Rhinoceros by Eugene Ionesco. The quote I picked from the act is:
"Berenger: Just think a moment. You must admit that we have a philosophy that animals don't share, and an irreplaceable set of values, which it's taken centuries of human civilization to build up.....
Jean: [in the bathroom] When we've demolished all that, we'll be better off!"
I have a about 2 questions for the quote. What philosophy do animals not have that we do? How big is our (as a humanity) set of values? If we could, how would we destroy our set of values? I also have one question about the whole play in general. Why is everyone turning into rhinoceroses? By reading this play, it kind of makes me wonder how they acted it out. With all the rhinoceroses and especially the props, since a lot of the scenes are really specific about the props. Also, the scene I just read Jean turns into the rhinoceros. In the scene, he turns green to the point where his skin is 'like leather' and the bump above his nose grows huge like a rhinoceros horn. The actor must have had a really hard time. My guess is that they did make-up while he was supposedly in the bathroom. I just figured that out 5 minutes ago. :) That's all for this week.
~Denise :)