this is exactly the book i was looking for.  it has great breadth and depth.  it is very well written.  i wish i had read this or parts of it in high school and college.  things that were made overly confusing by teachers and text books are much clearer.  i highly recommend it to anyone who has an interest in higher level mathematics. truly excellent.<br><br>my only complaint is with the kindle edition which i purchased.  it is fine but could certainly be better.  some of the equations are faint and difficult to read.  i agree with other reviewers as well that the copious references to other sections would have been a great opportunity for links.  i know it is much harder to produce a kindle version of a book like this than it is for a popular novel.  i think they did a good job but it would be great if they could improve it...  all in all though i am still happy i have the kindle edition as it is a rather large book and the kindle is much easier to hold in my hand :)<br><br>Edit:  the kindle version is much easier to read on an iPad. Seems to be the resolution and range of grays that the kindle device can render not an issue with the content itself.