Sir John Marks Templeton, who has died at the age of 95 in Nassau, conquered Wall Street to become one of the world's greatest investors and philanthropists.

Sir John, who was one of the first people to set up a mutual fund shop in New York 65 years ago, had a simple philosophy: If 90 per cent of people are selling something it is probably undervalued; look in countries where other people aren't looking; and do the opposite of others.