Jack the Ripper

At last, the letter from Jack the Ripper is shown to people in Museum in Docklands in London.
This case is the most infamous crime, so even I who is Japanese, have known it.

I think that the Jack was well educated person so that his hand writing is beautiful and sophisticated.
Due to his intelligent, nobody could capture him.
He was completely different from other murders.
Firstly he had strong purpose to change society to better and secondly his action was motivated by some kind of morality.
Finally, he always lest varied messages, for example he sent letters and he took some organs from bodies.

We have never known who was Jack yet.
Did jack live in the East End ?

web site of Museum in Docklands
http://www.museumindocklands.org.uk/English/