Deft, opinionated, Foster is one of those rare art theorists whose measured prose can engage a wider readership, cutting through the philosophical inflationism that afflicts much of the higher gossip among art critics.

Guardian

Foster's latest book, Bad New Days, attempts to recover the idea of an avant-garde after a hard half-century of infighting, obfuscation, rivalry, and successive failures to engage with the real world of politics.

Harper's

Foster's strength lies in his erudite attention to those artists that have emerged as definitive of their particular moment.

- Mostafa Heddaya, Artinfo