The Unseen World, and Other Essays, by John Fiske.

John Fiske, an influential American philosopher and historian, dedicated his career to interpreting and popularizing Darwin's theories, asserting that science and religion coexist harmoniously. After a brief legal career, he became a prominent lecturer and authored numerous works, including "Outlines of Cosmic Philosophy" and "The Discovery of America." His writings span various topics, from mythology to political ideas, reflecting his belief in the interconnectedness of history and human development. Fiske's contributions significantly shaped American thought in the late 19th century.