Collingwood’s account of absolute presuppositions generates an interesting angle on the question of scepticism concerning induction. Hume had argued that inductive inferences rely on the principle of the uniformity of nature. If it is true that the future resembles the past, then inferences such as “the sun will rise tomorrow” are inductively justified. However, since the principle is neither a proposition about matters of fact nor one about relations of ideas the proposition “nature is uniform”