Rule of three

There is a lot tweaking to be done to these paintings but I am enjoying a certain freedom with colour...There was no intention to portray these as a triptych but having photographed three paintings in progress it made me reflect on the significance of threes, from the holy trinity to the rule of thirds. Statements or slogans have more impact when delivered in three simple words, and all stories or events have a beginning, middle and an end, the ABC of action, behaviour and consequence. I still like to divide my compositions horizontally by three even if the middle section is really only a merging of the other two, the space between air/sky/vapour and earth/matter/solid. Working in thirds within a square makes more relevant the basic elements of composition: tonality, weight, balance, symmetry...Is there any significance that I have just begun reading J G Ballard's The Drowned World? (sorry Mr Proust, as much as I love the way you describe the minutiae of things, I need to put you on hold for a while, and then perhaps remember better the things past)...