Imam Al Ghazali was one of the most important and Mujjtahids (Reformers of faith) a person who is chosen every century out of us to reform our faith. He was it. He was the Imam who battled secular scholers of muslim faith, today you can see his world in Europe where his teachings or refutation was used by the Christians to refute seculars. You can search him on the net brother and he has a lots of books translated into English by a contemporary muslim scholer Sheikh Abdul Hakim Murad of Chambrighe University, he studied in Al Azhar, and he is a convert too.
I hope people Like Ghazali are around always to help our Ummah.