I am not a Buddhist (yet) but marinating in Buddhist philosophy and secularized Buddhist practices. I have problemes with their cosmology and some of the meatphysics.
I started pracitcing after hearing an introductory lecture on Nagarjuna's Mūlamadhyamakakārikā, perhaps the earliest known systematic presentation of emptiness.
Does anyone have a good tip for books thst gives a comprehensive presentation of the philosophy of emptiness outside of Buddhism?