Enso, a Japanese word meaning circle. When drawn with an opening, it can suggest that imperfection is an inherent part of existence. The enso is also strongly associated with zen, symbolizing absolute enlightenment, strength, elegance, the universe, and the void. An "expression of the moment". It can also symbolize the Japanese aesthetic itself: wabi (transient and stark beauty), sabi (the beauty of natural patina and aging), and yūgen (profound grace and subtlety).