I am looking for examples of papers, which are (according to you) an example of good mathematical writing, while I would be interested in some sort of justification what makes you believe so.
For instance, I tend to believe that writing short sentences in words rather than symbols appears to be more beautiful to me. However find the right balance on this is difficult because it can be annoying some times.
On the other hand, I have seen papers from great mathematicians which don't seem to adapt this sort of idea in writing. I understand that we tend to overanalyze things that have been struggling us for awhile and sweep under the rug others, that probably are more serious for our convention but we believe that are obvious.
To finish this off, I am not looking for justification like "The font size is beautiful", or "I like his/her style because is my mathematical-idol and I like the mathematics they do". Apparently the paper you will post would have some relation with mathematics you like, and the font is not so important (for me). I would like to see justification regarding the writing and only this. Of course welcome is every book or online handout that has to do with mathematical writing at this level and you think is useful.
Thank you!