Sentence:  From a scholarly standpoint, the book was poorly written: Scholarly works demand keen attention to logical consistency while maintaining an impersonal, <WSD>impassionate</WSD> voice; and while the "Course" certainly lack humour, it is anything but <WSD>impassionate</WSD>, and far from being logically consistent. 
Meaning of the word marked with <WSD> tags:  Lacking passion; dispassionate