"Art is a complex structure of communication, expression, discovery and invention." Hear from the former Director of the Brooklyn Museum, Arnold Lehman, on #CarlosCruzDiez, one of the key protagonists in the fields of kinetic, optical and light art, alongside the likes of Dan Flavin, James Turrell and Jesús Rafael Soto. Read the full story on phillips.com. . #LuminousReality is on view at 30 Berkeley Square through 6 September in London.