Although C. S. Lewis is most known as a prose writer for his clear, incisive literary criticism, Christian apologetics, and imaginative Ransom and Narnia novels, he started out as a poet. With the exception of George Sayer's masterful "C. S. Lewis: A Biography," very little has been written about his poetic career, which includes publications as early as 1914 when he was only 18 years old. However, recent studies have shown that he was also a highly skilled poet who used his poetry to explore ideas and issues related to Christianity. One study showed that more than half of all of C. S. Lewis's poems contained elements of fantasy which illustrates his love of allegory and fiction writing later in his life. He began publishing poems in magazines when he was just eighteen years old and continued to do so until he became famous. His first collection, 1914's A Pilgrim's Poems, was published when he was still attending Cambridge University and studying for ordination into the Church of England. He left the church after only three years due to dissatisfaction with its practices but remained a devout Catholic all his life. Even though he stopped writing poems once he became famous, several scholars have argued that he should be considered one of the leading poets of the English language because he was such a prominent figure in both prose and poetry.