I've never once heard of anything, other than quackery, describe the weight of a human soul, and the idea of math being able to express the value of one is... Mildly offensive in that statement's hubris. 

I'm not particularly awed by this quote. Math is certainly able and versatile, at least for ones that become conversant, but... I just can't really jive with what is said hear. 

(Don't take this too seriously, I'm a failure at math past calculus 3... 😅 I just don't really like people attempting to place limits on things that are priceless and beyond human comprehension by design (in my opinion).)