Found this article in several places on the web.
“There are certain intrinsic principles that one needs to grasp to successfully capture the spirit of the Japanese garden. Most importantly, nature is the ideal that you must strive for. You can idealize it, even symbolize it, but you must never create something that nature itself cannot.
For example, you would never find a square pond in the wild, so do not put one in your garden.
OOPS!