As a writer specialising in psychology, I’ve come across hundreds of evidence-based tips for better thinking. Few have proven as useful to me as the ancient strategy of illeism.

Put simply, illeism is the practice of talking about oneself in the third person, rather than the first person. The rhetorical device is often used by politicians to try to give their words an air of objectivity. In his account of the Gallic War, for example, the emperor Julius Caesar wrote “Caesar avenged the public” rather than “I avenged the public”. The small linguistic switch seems intended to make the statement feel a little more like historical fact, recorded by an impartial observer.

To the modern ear, illeism can sound a little silly or pompous – and we may even deride famous people who choose to talk in this way. Yet recent psychological research suggests that illeism can bring some real cognitive benefits. If we are trying to make a difficult decision, speaking about ourselves in the third person can help to neutralise the emotions that could lead our thinking astray, allowing us to find a wiser solution to our problem.

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The scientific study of wisdom has been spear-headed by Igor Grossmann at the University of Waterloo in