“At the conclusion of the Life of Muhammad, it may perhaps be expected that I should balance his faults and virtues, that I should decide whether the title of enthusiast or impostor more properly belongs to that extraordinary man. Had I been intimately conversant with the son of Abdallah, the task would still be difficult, and the success uncertain; at the distance of twelve centuries, I darkly contemplate his shade through a cloud of religious incense; and could I truly delineate the portrait of an hour, the fleeting resemblance would not equally apply to the solitary of Mount Hera, to the preacher of Mecca, and to the conqueror of Arabia.⁠ ⁠… From enthusiasm to imposture the step is perilous and slippery; the daemon of Socrates affords a memorable instance how a wise man may deceive himself, how a good man may deceive others, how the conscience may slumber in a mixed and middle state between self-illusion and voluntary fraud.”