Discontinuity, Which Has Never Ceased from the Very Beginning

Discontinuity—the fact that within the space of a few years a culture sometimes ceases to think as it had been thinking up till then and begins to think other things in a new way—probably begins with an erosion from outside, from that space which is, for thought, on the other side, but in which it has never ceased to think from the very beginning.

— Michel Foucault, The Order of Things, An Archaeology of the Human Sciences, 50