You will be given a definition of a task first, then some input of the task.
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

In 1842, he contributed a series of letters to The Nonconformist in which he argued that government actions should be limited to upholding natural rights. The writings were collected and published as the pamphlet, The Proper Sphere of Government. The Principles of Psychology speculated on ideas that would become much more popular four years later, while The Man Versus the State discussed political liberty. In his first book, Social Statics (1851), he presented a progressive model of the changes in human society over time in which he asserted and defended the emergence of individualism as the natural culmination of societal evolution. For 10 points, name this British thinker and author of A System of Synthetic Philosophy who argued that "the survival of the fittest" is morally justified.
Output:
Social Science