Is this glass of water actually a full-grown oak tree?
In short: In 1973, Michael Craig-Martin presented a glass of water on a shelf and declared it a full-grown oak tree. It isn't a metaphor or a symbol; it is a literal assertion of belief. To accept it, the viewer must perform a profound act of faith.
Created in 1973, 'An Oak Tree' is a cornerstone of conceptual art that explores the 'suspension of disbelief.' The installation consists of a French Duralex glass of water placed on a glass shelf exactly 253 centimetres above the ground, accompanied by a text. The text argues that the artist has changed the physical substance of the water into that of an oak tree without altering its 'accidents'—its color, feel, weight, and size. It explicitly states: 'It's not a symbol.'
The work draws a direct parallel to the Catholic doctrine of Transubstantiation, where bread and wine are believed to become the body and blood of Christ while retaining their outward appearance. Given Craig-Martin's background as an altar boy, the piece serves to deconstruct art into its most basic element: the confident faith of the artist and the willing faith of the viewer. This 'act of faith' is what defines the work's existence, rather than any aesthetic pleasure or physical craft.
The piece has sparked intense debate since its 1974 debut at the Rowan Gallery. While some critics, like Damien Hirst, call it the greatest piece of conceptual sculpture, others dismiss it as 'damned stupid' or a 'con trick.' Its status as a turning point in art history is cemented by its influence on subsequent movements and its inclusion in major institutions like the National Gallery of Australia and the Tate. It remains a provocative test of how we assign meaning to the physical world.
The work even bled into 'real life' when Australian officials once barred it from entry, classifying it as 'vegetation.' Craig-Martin had to inform them it was merely a glass of water, an incident he noted perfectly extended the work's exploration of fact, fiction, and belief into the physical world.
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Sources
- Summary by Intellect · source: An Oak Tree
- Also: Art Institute of Chicago — Foliage—Oak Tree and Fruit Seller · CC0 (data); description CC BY 4.0
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