Only unreason can be thought as eternal

It is perfectly possible to conceive of a time determined by the governance of fixed laws disappearing in something other than itself – it would disappear in another time governed by alternative laws. But only the time that harbours the capacity to destroy every determinate reality, while obeying no determinate law – the time capable of destroying, without reason or law, both worlds and things – can be thought as an absolute. Only unreason can be thought as eternal, because only unreason can be thought as at once anhypothetical and absolute. Accordingly, we can say that it is possible to demonstrate the absolute necessity of everything's non-necessity. In other words, it is possible to establish, through indirect demonstration, the absolute necessity of the contingency of everything.

Quentin Meillassoux, After Finitude (Continuum, 2008) p. 62