“the use of nature as a motif for garden design (and perhaps a reason why nature imagery was such a fundamental theme of the Heian period [794-1184] in general as well) was based on the widespread belief that there was something inherent about the natural world that was wholesome and correct. Things as they appear in the natural world were believed to express an innate balance, … a kind of healthfulness. It followed that to use those elements in the garden in the same way they were found in nature was
Jirō Takei & Marc P. Keane