When Michael Foot resigned as editor of the Evening Standard in 1943, after five years of running the paper, he wrote to Lord Beaverbrook: "Your views and mine are bound to become more and more irreconcilable. As far as this socialist business is concerned, my views are unshakable." Sixty years later, those views remain unshakeable, however unfashionable they have become. The genuine warmth with which Mr Foot's 90th birthday is being celebrated today is in recognition of a principled man who has held fast to what he believes. Romantic idealists such as Michael Foot and Tony Benn do not tend to make good politicians. There is a rigidity about their convictions which is unsuited to the daily compromises forced upon them in the hurly-burly of real life, as the Labour party discovered when it elected Mr Foot as its leader. But in his politics as in his writing, Mr Foot has always conveyed an exemplary honour and decency, and as an ideologue, marinated in the history and traditions of Parliament and the Labour movement, he remains a guiding light to the Labour left. At Tony Blair's party for him at Number 10 this evening, Mr Foot will undoubtedly look out of place. But many people who followed him into "this socialist business" will think all the more of him for that.