Lots of enlightenment thinking (particularly those leading towards too much collectivism or capitalism, freethought and rationalism) have been denounced by the Popes and the Saints and the Bishops and lots of other people, but has Immanuel Kant ever been denounced? I only took one introductory Philosophy class in college and the only system that I remotely took a fancy too was the Categorical Imperative.
What I want to know is, in a broad sense, has it been found lacking in some way by the philosophical arm of the Catholic Church? It seems to me a great way of refuting a number of the moral evils of the day (from littering to gay "marriage"), but is a Catholic justified in using it as a justification for anything?
I'd prefer any answer not go in to great detail about Kant himself; just the very basic nature of "something that is good for me, should be good for everyone". Because it sounds to me like proto-personalism.