To batalay: Thanks for yours comments
 

Hello Bulent,
I enjoy really your comment, so different and reflecting your curiosity for our world. I cropped my photo just by feeling, and because it was the way I liked it best. I am not a good mathematical spirit and I just do it with my eyes and heart. I am glad you like it.
Your comment is the first one I receive which make me have a deep think about this. (It is a shame that I don’t speak better English to explain you my feeling) Thanks.
p.s. I will look for your book.