Dr. Johnson, often referred to as Samuel Johnson, was an influential English writer and lexicographer born in 1709. He is best known for his work on the Dictionary of the English Language, published in 1755, which was one of the first comprehensive dictionaries and significantly shaped the English language. In addition to his dictionary, Dr. Johnson was a prominent essayist and critic. He contributed to various literary works, including the Idler and the Rambler essays. His insights into literature and language have left a lasting impact on English literature and continue to be studied today.