Brazilian Formula one racing champion in 1972 and 1974. He also won the Indianapolis 500 in 1989 and 1993.
He grew up in a racing family, headed by his parents and his older brother.
After recovering from a plane crash, he became a born-again Christian.
Has five children between his first wife Maria Helena and his second, Joana.
He was named after American author and philosopher Ralph Waldo Emerson.