For many years at Art College I concentrated on still-life and figure painting. Under the tutelage of such artists as Euan Uglow, Cecil Collins and Derek Boshier, I was very influenced by Cézanne and what might be called ‘significant form’. A picture develops through a certain order of relationships and equilibrium.

Thus, it is not what you paint but how you paint. Before a picture becomes a view of something – a table and chair – it is an abstract assemblage of lines, tones, shapes and colours. That tension between depicting something real and the abstract language used to construct the picture is what really interests me; the endless process of resolving a formal problem and finding a solution. One attempt at resolving a subject is never enough and like Monet and Mondrian I prefer to work in series, developing paintings over years of work.

When I started to travel seriously and for longer, applying these techniques proved difficult. I have often travelled slowly on foot, covering many miles in a day. On the way my eye would be caught by amazing moments of light which had to be recorded quickly. I used watercolours as they were light and easy to set up, and found that I could respond to a vast number of subjects – figures, landscape, buildings, trees, roads, crowds, the sea. I was amazed by the watercolours of both Edward Hopper and John Singer Sargent and their immediate responses to things seen.

Travel has always represented an opportunity to contradict myself. Just when I might only have painted Parisian cafés and interiors I would force myself to paint in Morocco. Flatter, more abstract work would emerge with a quite different spatial play (an absence of linear perspective).

New York was a huge leap in the dark. The problem lay in fitting a vast scale and multitude of detail within a rectangle – how to make it painterly and not tediously detailed. Again, one finds ways. Twilight obfuscates a subject and can leave only the essentials. Also, there is a certain greyness to the light and colour of stonework to which everything can be related, as can be seen in ‘Silverlight Manhattan’. This picture provided me with an opportunity to express an almost incomprehensible vastness, not only in construction and human ambition, but in the landscape and sky beyond. The idea had germinated after seeing a large work by Anselm Kiefer depicting a flight over San Paolo.

My painting's success lies on a knife edge as I kept heightening the tone until it reached a sort of sublime emotional pitch.

This is also the preoccupation behind my Grand Central Station paintings where the speed of light mixes with the speed of a large group of people in movement. All within the confines of an ideal architectural space. Travel has, of course, enabled me to visit places where the contrast between light and dark is far greater than in England. This interest in extreme opposites has fostered an interest in symbolism. Not an overt, obvious symbolism but an attempt at subtly alluding to the metaphysical power of eternal elements – darkness and light, good and evil, stillness and movement, chaos and order, life and death.

All these elements can be alluded to in the way an artist handles light. Whether it is in the squares and piazzas of France and Italy, or the nocturnal spaces of great cities, the quest and constant search for ever more powerful symbols and forms remains.

Clive McCartney