William Strunk Jr. was an American professor of English and a prominent author, best known for his influential book, The Elements of Style. Born in 1869, he taught at Cornell University for many years, where he emphasized the importance of clear and concise writing. In 1918, Strunk published the first edition of The Elements of Style, which became a staple for writers and students. The book, co-authored later by E.B. White, focuses on the principles of composition and grammar, making it a valuable resource for anyone looking to improve their writing skills.