Looking at Rugs
To spend half a minute looking at a rug is to waste half a minute, for the object was made to be considered at leisure, and in the mood of rest. Arabesques are meant to be followed. Series of tones may be observed at first in a like kinesthetic fashion, by remarking the use of tone at its allotted intervals, some green or rose reintroduced as leaf, stripe, flower and so on in a different environment and shape. There is constant appeal to the circumference of vision and the eye resting on one place should not be too definitely centered, for it is in the "tail of the eye” that the most interesting recognitions of design will be found."
Schoeder: The Art of Looking at Rugs