Suprematist tale about two squares

For the art of the beginning of the twentieth century, geometry and infinity became in that it is able to visualize hidden processes, to make it visible that, being the basis of creativity and the universe, nevertheless externally does not show itself in any way. This is pure philosophy in art, based on the same classical categories - being, matter, movement, space and time, but revealing them not through words, but with the help of form, texture, color and location in relation to each other on a sheet of individual elements. The letter, square, bar - as in the Tale of 2 Squares " - not images, but signs, symbols that refer to the private (the historical context - “Red” was established in black ”), and to the general (creativity, creation, and the Creator -" They fly to the ground from afar ... ").
Where it is said that texts can only be written in words?
E. Lavrentieva, art critic, associate professor of the Department of Communicative Design of the MGHPA named after S. G. Stroganova