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Well, there are plenty of good writers who are in philosophy. I think it is nice reading for him.
Your Z Library app? I have not heard of it before.

 3 days ago 

Yes, but it's an unknown subject to me. I always studied the business branch, where they included more math and unfortunately removed humanities subjects.

It turns out that app is like a digital version of the Library of Alexandria, but pirated. I hope no one from the FBI reads this!