This "translating" difficulty exists so much in philosophy, which is why it sounds like philosophers are randomly salting their language with Latin and German - it's jargon for a purpose; they will say "qua" instead of what because they're referring to the philosophical idea behind "qua".

It is possible to find well-done introductions that attempt to bring a philosopher 'forward' but even those often find it easier to define what the philosopher means by 'caritas' and then use the Latin instead of translating it as "love" or "charitable love" each time.