JRR Tolkien loved ancient Pagan mythology, especially Norse mythology. He also loved trees, flowers, rivers and streams, mountains, woods, and landscape generally. His writing is infused with a love of Nature, as well as an in-depth knowledge of ancient cultures and mythologies. He was, however, a Catholic, both by upbringing and conviction. He wrote his legendarium as a supporting world for his invented languages; though the earliest version was intended “to restore to the English an epic tradition and present them with a mythology of their own”.