Josef Muller-Brockmann quotes:

Grid systems in graphic design

The grid system is an aid, not a guarantee. It permits a number of possible uses and each designer can look for a solution appropiate to his personal style. But one must learn how to use the grid; it is an art that requires practice.

Just as in nature systems of order govern the growth and structure of animate and inanimate matter, so human activity itself has, since the earliest times, been distinguished by the quest for order.