Eton. In 1897, Keynes won a King's Scholarship to Eton College, where he displayed talent in a wide range of subjects, particularly mathematics, classics and history: in 1901, he was awarded the Tomline Prize for mathematics. At Eton, Keynes experienced the first "love of his life" in Dan Macmillan, older brother of the future Prime Minister Harold Macmillan. Despite his middle-class background, Keynes mixed easily with upper-class pupils. In 1902, Keynes left Eton for King's College, Cambridge, after receiving a scholarship for this also to read mathematics. Alfred Marshall begged Keynes to become an economist, although Keynes's own inclinations drew him towards philosophy, especially the ethical system of G. E. Moore. Keynes was elected to the University Pitt Club and was an active member of the semi-secretive Cambridge Apostles society, a debating club largely reserved for the brightest students. Like many members, Keynes retained a bond to the club after graduating and continued to attend occasional meetings throughout his life. Before leaving Cambridge, Keynes became the President of the Cambridge Union Society and Cambridge University Liberal Club. He was said to be an atheist. In May 1904, he received a first-class BA in mathematics. Aside from a few months spent on holidays with family and friends, Keynes continued to involve himself with the university over the next two years. He took part in debates, further studied philosophy and attended economics lectures informally as a graduate student for one term, which constituted his only formal education in the subject. He took civil service exams in 1906. The economist Harry Johnson wrote that the optimism imparted by Keynes's early life is a key to understanding his later thinking. Keynes was always confident he could find a solution to whatever problem he turned his attention to and retained a lasting faith in the ability of government officials to do good. Keynes's optimism was also cultural, in two senses: he was of the last generation raised by an empire still at the height of its power and was also of the last generation who felt entitled to govern by culture, rather than by expertise. According to Skidelsky, the sense of cultural unity current in Britain from the 19th century to the end of World War I provided a framework with which the well-educated could set various spheres of knowledge in relation to each other and life, enabling them to confidently draw from different fields