Larsen's cohort of secularists became leading orators, writers, organizers, and debaters for the secularist cause. Why then did they reconvert to Christianity? Once again, the narrative of every life is unique, but Larsen helpfully identifies a number of common factors at play in reconversion. These erstwhile militant secularists came to see that secularism was better at tearing down Christianity than building a replacement, left little solid basis for the construction of a satisfying morality, and was based on an oppressively narrow definition of reason that left little room for intuition and emotion. In addition, they remained haunted by the compelling figure of Jesus of Nazareth, became intrigued afresh by the grandeur of the Scriptures, repudiated naked materialism by flirting with spiritualism, came to see that they could be radical politically without abandoning Christianity, and became intellectually persuaded of the truth of Christianity from their consumption of a wide range of books, sermons, and letters.
Crisis of Doubt is an impressively researched, clearly written, and forcefully, even polemically, argued work of scholarship. Moreover, Larsen is careful not to overplay his hand. Despite supplying an appendix of some thirty additional names of erstwhile secularists who found some sort of religion, he acknowledges that reconversion from secularism was not exactly rampant in Victorian Britain. He is also careful to show that his seven converts did not necessarily return to an impeccably conservative form of evangelical Protestantism. In fact most embraced fairly conservative positions on important Christian doctrines, but many held a more flexible view of biblical inspiration, and most remained radical in their social and political orientations. Reconversion did not mean capitulation to the religious or political status quo, and old radicals lived on in new Christian clothes.
By suggesting that the "crisis of doubt" within Victorian secularism was a more common and powerful reality than was the "crisis of faith" among the Victorian intelligentsia, Larsen is hoping not only to correct an exaggerated emphasis on the Victorian crisis of faith but also to show the intellectual robustness of Christianity in the 19th century. Challenging the notion that there was an inevitable and inexorable slide towards Matthew Arnold's "Dover Beach," Crisis of Doubt argues that the tide of faith could come in as well as go out. In that sense the book also acts as an important counterpoint to intellectually sloppy versions of secularization theory.






