“The land ethic simply enlarges the boundaries of the community to include soils, waters, plants, and animals, or collectively: the land. Land, then, is not merely soil; it is a fountain of energy flowing through a circuit of soils, plants, and animals.” – Aldo Leopold
Balance is important in nature. We too often “fight against the current” with unnatural forms of weeding, pest control, and soil amendment, among other agricultural no no’s. EX: Soil is stripped of nutrient then in turn nutrients are mined from off site locations furthering the unbalance. By gardening with a conscientious mind set we can achieve a synergy with nature, giving Mother Nature a chance to show us how cool she really is.
I personally recommend a book by Sarah Reichard, The Conscientious Gardener. Sarah was an influential part of urban agriculture and sustainable forestry mostly known for her work with the University of Washington in their botanical gardens and Center for Urban Horticulture.