It is impossible to write a fully satisfactory intellectual history of a period, though there a number of ways to try. One can be encyclopedic. Lay it all out. Who were the major thinkers of the time period? What were they influential for? Why do we remember them today? What were the major ideas and schools? How did they change?
Or one could go to the opposite extreme. Develop a theme and relate everything to that theme. One could, say, take the title of this book seriously. "In the period prior to 1848, most influential thinkers had confidence in something they called "reason." By which ____ meant ____ and ____ meant _____. But this confidence was lost because ______ and replaced by ______, which is shown in __________.
And one constantly faces the question, "How much do I report the past on its own terms and how much do I make judgments: this idea was right; this one was wonderfully, fruitfully right; that idea was wrong; that other was dangerously wrong; and that one there was horribly, terribly, dangerously wrong."
Burrow doesn't go for a pure type. He assumes you already know a lot and he admits that a good deal of the selection is idiosyncratic. There are few obvious themes that the reader can follow through the book to make it hang together. Some ideas are criticized; some are just presented--seemingly without rhyme or reason.
And speaking of rhyme, or rather rhythm: There are too many sentences like, "Though intellectually inconclusive and resting on a mistaken analogy, the use of Social Darwinist rhetorics in the late nineteenth and early twentieth centuries was not, so far as one can judge, negligible in its consequences, in the sense that for those who used them or took them seriously they tended always, as one might say, to raise the stakes: to create a sense of permanent crisis and to make vast issues of progress or retrogression, of national, cultural or racial triumph, survival or extinction appear to depend on policy alternatives." (p. 95)
I think it is possible to pull apart that sentence and determine what the author means, but it would be nicer IF THE AUTHOR HAD DONE IT HIMSELF.
The author's not inconsiderable wit is often ruined by a tin ear. "It is hard not to feel that someone with the nervous system of Kaiser Wilhelm II should ideally never be allowed near a phrase like `the struggle for existence'." (95 again) Why is that "ideally" there?
Reading the book was like driving a long forested road. It curved to one side and then another, gently rose and fell several times a mile, on and on for 253 pages. At the end I'd seen lots of trees, but I didn't have a feel for how (or whether) they fit together. I didn't know if the road had a shape, and whether I'd wound up ten miles from where I started or a hundred.
I give the book 4 stars for information, 2 for organization and style.