As these hybrids proliferate, the prospect of keeping nature and culture in their separate mental chambers becomes overwhelming—and rather than try, Latour suggests, we should rethink our distinctions, rethink the definition and constitution of modernity itself. His book offers a new explanation of science that finally recognizes the connections between nature and culture—and so, between our culture and others, past and present.

Nothing short of a reworking of our mental landscape, We Have Never Been Modern blurs the boundaries among science, the humanities, and the social sciences to enhance understanding on all sides. A summation of the work of one of the most influential and provocative interpreters of science, it aims at saving what is good and valuable in modernity and replacing the rest with a broader, fairer, and finer sense of possibility. 

It seems evasive, and even a bit comic, how thinkers in the past century or so, increasingly designate eras with the prefix "post": "post-Christian," "post-Holocaust," "post-industrial," "post-structuralist,"post-modern," "post-humanist," and so on. . . These labels define a period by what it follows rather than what it is, so they do not really describe it at all. According to Latour in We Have Never Been Modern, this is because the fundamental characteristic of modernism has been a strictly linear conception of time, which is divided up according to revolutionary events and ideas. 

This means that everything is irrevocably changed. Those ruptures between the past and present, in turn, are projections of a similarly abrupt division of the world between the realms of nature, ruled by inexorable laws, and of civilization, determined by human freedom. The breaks with the past are, however, an illusion, since "we have never been modern," and historical changes are neither progressive nor irreversible.