Magnus Magnusson was a celebrated Icelandic-British journalist, translator, writer, and television presenter. He is best remembered as the long-standing host of the BBC's intellectually demanding quiz show, Mastermind, which he presented for 25 years from 1972 to 1997. His famous catchphrase, 'I've started so I'll finish,' became a widely recognized part of British popular culture. Beyond television, he was a respected author, particularly on the subjects of history and Norse sagas, translating many for modern audiences.