  Santayana’s strong interest in literature and aesthetics is evident throughout this early period, but by 1904, his attention turned almost fully to philosophical pursuits. During this period his publications include: Lotze’s System of Philosophy (dissertation), Sonnets and Other Verses (1894), The Sense of Beauty (1896), Lucifer: A Theological Tragedy (1899), Interpretations of Poetry and Religion (1900), A Hermit of Carmel, and Other Poems (1901), The Life of Reason (five books, 1905–1906), Three Philosophical Poets: Lucretius, Dante, and Goethe (1910).