Identify the western writer of the quote ?
"Philosopher, Orator, Apostle, Legislator, Conqueror of Ideas, Restorer of Rational beliefs.... The founder of twenty terrestrial empires and of one spiritual empire that is Muhammad. As regards all standards by which human greatness may be measured, we may well ask, is there any man greater than he?"
"Never has a man set for himself, voluntarily or involuntarily, a more sublime aim, since this aim was superhuman; to subvert superstitions which had been imposed between man and his Creator, to render God unto man and man unto God; to restore the rational and sacred idea of divinity amidst the chaos of the material and disfigured gods of idolatry, then existing. Never has a man undertaken a work so far beyond human power with so feeble means, for he (Muhammad) had in the conception as well as in the execution of such a great design, no other instrument than himself and no other aid except a handful of men living in a corner of the desert. Finally, never has a man accomplished such a huge and lasting revolution in the world, because in less than two centuries after its appearance, Islam, in faith and in arms, reigned over the whole of Arabia, and conquered, in God's name, Persia Khorasan, Transoxania, Western India, Sy ...more