You don't say to a university professor who is immersed in a particular subject that they should get a life. They are encouraged to enjoy their subject and to pass it on.

Magnus Magnusson KBE ([ˈmaknus ˈmaknusɔn]; 12 October 1929 – 7 January 2007) was an Icelandic television presenter journalist translator and writer. Early life
Magnusson was born in Reykjavík but grew up in Edinburgh where his father Sigursteinn Magnússon was the Icelandic consul. Magnusson made a one-off cameo appearance as himself hosting Mastermind in the children's series Dizzy Heights.

Magnus Magnusson KBE ([ˈmaknus ˈmaknusɔn]; 12 October 1929 – 7 January 2007) was an Icelandic television presenter journalist translator and writer. He was born in Iceland but lived in Scotland for almost all of his life although he never took British citizenship.