I haven't read it, might be good
Download here
http//avaxhome.ws/ebooks/religion/east/0060730641_0060099240Heart_of_I.html
Or here
http//sdrv.ms/WgQWW2
Very good ratings for this book here
http//www.amazon.com/The-Heart-Islam-Enduring-Humanity/dp/0060730641/