So here is one of my theories on happiness: we cannot know if we have lived a truly happy life until the very end. This view of life and death was reinforced by my close witnessing of the buildup to the death of Philip Gould. Philip was without doubt my closest friend in politics. When he died, I felt like I had lost a limb.

Alastair Campbell—best known as Tony Blair’s former Director of Communications—has written frequently about mental health, happiness, and the emotional costs of political life. This passage refers to Philip Gould (1950–2011), the Labour Party strategist and pollster who worked closely with Blair and New Labour and whom Campbell regarded as an intimate colleague and friend. Campbell describes witnessing Gould’s decline and death at close quarters, using that experience to underscore a classical idea (often associated with ancient moral philosophy) that the verdict on a “happy life” can only be made in retrospect, at its end. The personal grief (“lost a limb”) anchors the theory in lived experience rather than abstraction.

Campbell argues that happiness is not a momentary feeling but a whole-life assessment: only when a life is complete can one judge whether it was “truly happy.” The death of Philip Gould becomes a moral and emotional proof-point—an encounter with mortality that reframes what counts as success, fulfillment, and contentment. The quote also shows how grief can function as a measure of attachment: the intensity of loss (“lost a limb”) implies that happiness is bound up with relationships and shared purpose. Politically, it hints at the human cost behind public careers, suggesting that the narratives of achievement are inseparable from vulnerability, friendship, and endings.