Need context really to what the red sweater means to the person but it’s basically saying even when they stop feeling anxious/ ill the “red sweater” (whatever this means on context) still sits there like a big problem. You can infer the red sweater a big problem through the word “mountain” and is something they need to overcome. Red had connotations of “love” or “fire” maybe. Depends on context. Hope that helps :)
That he would argue with a brick wall.
So, Medieval culture you will still see it today. Such as when you read a book or a Medieval themed movie it’s there you just might have to use your brain to find it. The reason being Medieval culture is still here is because the order of it the principles of it if you will fascinate us to great lengths making us reach a little bit farther into our creative outlooks.