sent instead a bucketful of water? Would he gently muse on 'the subtle and obscure waters of identity'—or make immediate reflections on the mental wellbeing of his timber suppliers?" Brian Sewell asked why "the miracle" was "a work of art fit only for a gallery, and not some thaumaturgical object venerated in a church?" Michael Daley wrote that the work was "not a hard-won, skilful depiction of a glass and a shelf" and that for twenty years "instead of ridiculing the self-deluding, pretentious offerings of Craig-Martin and his like, critics fawned and eulogised." Derivative works Tim Crouch has written and performed an eponymous play to critical acclaim in New York and London. The Little Artists (John Cake and Darren Neave) feature a Lego version in "Art Craziest Nation". An Oak Tree is quoted as an important influence in Ramsey Dukes' article Four Glasses of Water first published in The Journal for the Academic Study of Magic Issue 2, 2004. See also Substance theory Notes and references External links John Tusa Interview with Michael Craig-Martin "Live In Your Head: Concept And Experiment In Britain, 1965-75" ArtForum, Summer, 2000 by James Meyer Conceptual art Modernist sculpture Works by Michael Craig-Martin 1973 sculptures Contemporary works of art Water in art