Sérgio Buarque de Holanda was a Brazilian writer, journalist and sociologist. His greatest achievement was Raízes do Brasil, a landmark of Brazilian sociology, in which he developed the groundbreaking concept of the "cordial man" as the fundamental Brazilian identity. His son, Chico Buarque de Holanda is an accomplished singer-songwriter and novelist and his daughter Miúcha is also a famous singer. Buarque de Holanda was also a member of the Academia Paulista de Letras.