Agnes Martin - Square Format

Agnes Martin
Aspiration
1960
in "Drawing is Another Kind of Language"

My Formats are square, but the grids never as absolutely square; they are rectangles, a little bit off a square, making a sort of contradiction, a dissonance, through i didn't set out to do in that way. when i cover the square surface with rectangles, it lightens the weight of the square, destroys its power.  
Agnes Martin, 1967 - "homage to the square" Lucy Lippard, vol 55, no,4, p55.

Although Agnes Martin's paintings look simple, they are far from, every mark she makes has a reason and this is evident here in the quote above where she talks about the square format, the images do give a sense of shifting in shape, giving a work potential to create a subtle shift in perception. 

I am currently working in rectangular portrait format, but when reading this quote from Agnes Martin it has given me the incentive to work in square format and try to push the boundaries of this even scale, buy off setting forms and line.