Thornton Wilder studied archaeology and Italian as a special student at the American Academy in Rome (1920–1921), and earned a master of arts degree in French literature at Princeton in 1926.

In addition to his talents as playwright and novelist, Wilder was an accomplished teacher, essayist, translator, scholar, lecturer, librettist, and screenwriter. In 1942, he teamed with Alfred Hitchcock to write the first draft of the screenplay for the classic thriller Shadow of a Doubt, receiving credit as principal writer and a special screen credit for his “contribution to the preparation” of the production. All but fluent in four languages, Wilder translated and adapted plays by such varied authors as Henrik Ibsen, Jean-Paul Sartre, and André Obey. As a scholar, he conducted significant research on James Joyce’s Finnegans Wake and the plays of Spanish dramatist Lope de Vega.

Wilder’s friends included a broad spectrum of figures on both sides of the Atlantic—Hemingway, Fitzgerald, Alexander Woollcott, Gene Tunney, Sigmund Freud, producer Max Reinhardt, Katharine Cornell, Ruth Gordon, and Garson Kanin. Beginning in the mid-1930s, Wilder was especially close to Gertrude Stein and became one of her most effective interpreters and champions. Many of Wilder’s friendships are documented in his prolific correspondence. Wilder believed that great letters constitute a “great branch of literature.” In a lecture titled “On Reading the Great Letter Writers,” he wrote that a letter can function as a “literary exercise,” the “profile of a personality,” and “news of the soul,” apt descriptions of thousands of letters he wrote to his own friends and family.

Wilder enjoyed acting and played major roles in several of his own plays in summer theater productions. He also possessed a lifelong love of music; reading musical scores was a hobby, and he wrote the librettos for two operas based on his work: The Long Christmas Dinner, with composer Paul Hindemith, and The Alcestiad, with composer Louise Talma. Both works premiered in Germany.

Teaching was one of Wilder’s deepest passions. He began his teaching career in 1921 as an instructor in French at Lawrenceville, a private secondary school in New Jersey. Financial independence after the publication of The Bridge of San Luis Rey permitted him to leave the classroom in 1928, but he returned to teaching in the 1930s at the University of Chicago. For six years, on a part-time basis, he taught courses there in classics in translation, comparative literature, and composition. In 1950–1951, he served as the Charles Eliot Norton Professor of Poetry at Harvard. Wilder’s gifts for scholarship and teaching (he treated the classroom as all but a theater) made him a consummate, much-sought-after lecturer in his own country and abroad. After World War II, he held special standing, especially in Germany, as an interpreter of his own country’s intellectual traditions and their influence on cultural expression.

During World War I, Wilder had served a three-month stint as an enlisted man in the Coast Artillery section of the army, stationed at Fort Adams, Rhode Island. He volunteered for service in World War II, advancing to the rank of lieutenant colonel in Army Air Force Intelligence. For his service in North Africa and Italy, he was awarded the Legion of Merit, the Bronze Star, the Chevalier Légion d’Honneur, and honorary officership in the Military Order of the British Empire (M.B.E.).