This article is written by an Atheist. I think the follow quotes are bery interesting given they are said by an Atheist!

"Now a confirmed atheist, I've become convinced of the enormous contribution that Christian evangelism makes in Africa: sharply distinct from the work of secular NGOs, government projects and international aid efforts. These alone will not do. Education and training alone will not do. In Africa Christianity changes people's hearts. It brings a spiritual transformation. The rebirth is real. The change is good.

"It would suit me to believe that their [Aid workers] honesty, diligence and optimism in their work was unconnected with personal faith. Their work was secular, but surely affected by what they were. What they were was, in turn, influenced by a conception of man's place in the Universe that Christianity had taught."

"Removing Christian evangelism from the African equation may leave the continent at the mercy of a malign fusion of Nike, the witch doctor, the mobile phone and the machete."