Today I want to write about a topic that we talked a bit, last weekend. This semester I've been a lot in Vasconcelos library, at least twice a week. Before July, I had never been there, despite that, it's now one of my favorite places, for several reasons. But that is not the point now. The point is that during these last months I've realized that there are some people that I've seen several times there. They are homeless people, and what is curious is that they are commonly in the same places of the library. There's is this one I told you about last weekend, for example; you can find him at the 7th floor, his hair is grey, he has a beard and he is tall. I think he is very interesting because once I walked behind him I could realize that he was writing in a notebook, he did it very fast and it looked like he was writing something important, because his notebook was full of blue words. I wonder what he was writing. There's also another guy that...