The notion of Lessing, as Joan Didion once wrote, as a ‘didactic’ writer implies that her writing cannot be funny. But if the radical otherness of her outlook as a former colonial subject prevents some readers from laughing, Lessing’s use of humour, as a dialogic modality, brings awareness to problems otherwise denied or unrecognized. In her early fiction, humour takes on a conventional, social-realist function, drawing on the novel’s historical connections to the genre of satire. The limits of novelistic satire become apparent in The Golden Notebook (1962), however, and, from this impasse, Lessing’s humour moves towards an alternative, therapeutic mode in order to engage with such emerging concerns as ecological catastrophe and social collapse. After explicitly reconsidering the rhetorical value of humour in The Four-Gated City (1969) and the short story ‘A Report on the Threatened City’ (1971), Lessing incorporates enigmatically humorous moments into The Summer Before the Dark (1973) and The Memoirs of a Survivor (1974). As these works take greater distance from the Western novel tradition, they embrace the subtly dialogic method of the Sufi teaching story, which informs the absurd but instructive anecdotes of colonial Rhodesia in Lessing’s 1985 lecture,‘Prisons We Choose to Live Inside.’