Colour

Colour, the painter Patrick Heron once proclaimed, is a continent that artists have yet to explore. The mammoth two-volume The Book of Colour Concepts (Taschen, £150) catalogues numerous attempts to map this mysterious chromatic domain, from the late 17th century to the mid 20th. It quickly becomes clear that this area is infinitely vast. One only has to glance at the plates of the ‘Viennese Colour Cabinet’ (1794) – a whole column of blue-greens – to realise that. The effect of these technical diagrams is beautiful in the manner of abstract art. The illustrations from Goethe’s On Colour Theory (1810-12) could easily have been produced at the Bauhaus, while the

This is a book like no other. Part artwork and part compendium of a lifetime’s experience in design, it is meant to be looked at as much as read. Nor is it titled Colourful for nothing: entire pages are in vivid hues of vermilion, lime green, canary yellow, emerald and toffee. On them are displayed illustrations, patterns of fabric and family photographs, interspersed with chunks of prose or aphorisms. In short, it is an expression of its author’s philosophy, threaded through rather disjointedly with the story of her life. Iris Apfel is the only woman I can think of – with the possible exceptions of Diana Vreeland and Helena Rubinstein

True darkness, it turns out, can be experienced but does not exist. If you have been down a deep mine where the guide tells you to turn off your lamp you will have seen – in not seeing – something close to it: an utter nothingness in which your body and mind seem to shrink and expand at the same time. On a school trip to Big Pit in South Wales my entire class fell into a moment of unprecedented and never-to-be-repeated silence, a gasped amazement at the disappearance and invisibility of ourselves. Just for a moment everything vanished – and then the whooping and squealing started.  This double impulse,