Time as essence

Performance artist Tehching "Sam" Hsieh presents the idea that life is a life sentence through his exhibition, Time Clock Piece. Lance Crayon examines what makes Hsieh tick.

Tehching "Sam" Hsieh moved to New York City from Taiwan in 1974, and within seven years the high school dropout had become one of the most important performance artists in the world.

Hsieh's work has appeared at both the Museum of Modern Art and the Guggenheim in New York City, and was featured at the 2010 Liverpool Biennale Festival of Contemporary Art in 2010.