In the 1960s and 1970s Martian poetry aimed to break the grip of 'the familiar', by describing ordinary things in unfamiliar ways, as though, for example, through the eyes of a Martian. Poets most closely associated with it are Craig Raine and Christopher Reid. Martin Amis, an important novelist in the late twentieth and twentieth centuries, carried into fiction this drive to make the familiar strange. Another literary movement in this period was the British Poetry Revival, a wide-reaching collection of groupings and subgroupings that embraces performance, sound and concrete poetry. Leading poets associated with this movement include J. H. Prynne, Eric Mottram, Tom Raworth, Denise Riley and Lee Harwood. It reacted to the more conservative group called "The Movement".