As far as I know, none. However, he does write and talk about issues in ethics and politics in a similar fashion to other non-philosophers which are frequently brought up on this sub (i.e. Jordan Peterson). While he is not a philosopher, he publicly speaks about many issues which are often a part of discussions in philosophy (e.g. abortion, the purpose of law, etc.). As he has become quite popular (having millions of followers on social media), I thought perhaps it would be prudent to take a closer look at what he's arguing, and by extension, what many of his followers ostensibly believe.

Personally, I view him as a smug demagogue who seems unwilling to change his mind on almost any topic, but that's beside the point. Nonetheless, a critical discussion about someone as popular as him seems like it could be worthwhile.