I don't really have a sorted list of sources, but one thing that springs to my mind and isn't already on all lists out there is Yuri Lotmans Semiotic Theory¹, w

I don't really have a sorted list of sources, but one thing that springs to my mind and isn't already on all lists out there is Yuri Lotmans Semiotic Theory¹, which with its focus on boundaries offers an interesting perspective and toolset that isn't found in a lot of other places. And if you read careful you will find that hero leaving there comfort zone (having to step over a boundary) as well. ¹:Full PDF - https://monoskop.org/images/5/5e/Lotman_Yuri_M_Universe_of_the_Mind_A_Semiotic_Theory_of_Culture_1990.pdf https://monoskop.org/images/5/5e/Lotman_Yuri_M_Universe_of_t...