Arabian Society at the Time of Muhammad;Pringle Kennedy

Pringle Kennedy

Arabian Society at the Time of Muhammad, published in 1926, by Thacker, Spink & Co

 When Christianity conquered Caesarism at the commencement of the fourth century, it, in its turn, became Caesarised. No longer was it the pure creed which had been taught some three centuries before. It had become largely de spiritualised, ritualised, materialised .......
How, in a few years, all this was changed, how, by 650 AD a great part of this world became a different world from what it had been before, is one of the most remarkable chapters in human history .... This wonderful change followed, if it was not mainly caused by, the life of one man, the Prophet of Mecca ....

http://www.onislam.net/english/shariah/muhammad/muhammad-in-their-eyes/435262.html