In another essay of The Pillow Book, Sei Shonagon choses to discuss the cute things in life:
"Cute things. Face of a child painted on a gourd. A baby sparrow, approaching in a staccato on a calling tweet. An toddler, crawling in a hurry, keen enough to discover a very small dust on the way. The toddler then holding the dust between its tiny fingers, and showing it proudly to the adults around.
(Translated from the original by Ken Mogi)
The general conclusion, according to Sei Shonagon in the same essay, is that "cuteness is in everything, everything which is small". Although this "rule of cuteness" seems to be universal and provide sufficient basis for categorization, Sei Shonagon never gets tired of recounting the cute things one by one, possibly for the sheer pleasure of doing so.
The Pillow Book is an impressive example in the tradition in the Japanese culture to attend to and record verbally the details of qualia in the phenomenology of the world as we experience it. The torch of the tradition of cuteness is carried to this day.