Bridget Riley, C.H. (b. 1931)

'In my works created during the 1960s, I found that black and white along with shades of grey, behaved in the same way colours do; that is, they interacted and developed qualities such as contrast and radiance. There are myriads of senses and if one wishes to pass through them, then he must take the road of only one of them.'
(Bridget Riley quoted in exhibition catalogue, Metamorphosis: British Art of the Sixties, Andros, Museum of Contemporary Art, 2005, p. 85).