William Booth 
In Darkest England, and the Way Out [EPUB ebook] 

A work years ahead of its time, looking at the social issues in Victorian England and presenting pioneering ways of solving them from a Christian perspective. Although this was written over a hundred years ago, the same core issues still lie at the heart of Western society, and thus this revolutionary book still has something to say to the Church, encouraging it to offer physical support along with its words.