What is the main conflict in Eminent Victorians by Lytton Strachey?

In Eminent Victorians (1918), Lytton Strachey examined the lives of four famous English individuals from the Victorian Era and found that they were not quite what previous biographies and popular legend had made them out to be. The four in question were Cardinal Manning, the leader of England's Roman Catholic community; Florence Nightingale, the nurse; Thomas Arnold, the educational reformer; and General Charles George Gordon, a soldier and adventurer.