of the dharma will sustain the spirit, and you will be calm, pure, and joyful. Your daily life will be [the expression of] your true natural state. Once you achieve clarification [of the truth], you may be likened to the dragon gaining the water or the tiger taking to the mountains. You should realize that when right thought is present, dullness and agitation cannot intrude. Buddha-nature For Dōgen, buddha-nature or busshō (佛性) is all of reality, "all things" (悉有). In the Shōbōgenzō, Dōgen writes that "whole-being is the Buddha-nature" and that even inanimate objects (rocks, sand, water) are an expression of Buddha-nature. He rejected any view that saw buddha-nature as a permanent, substantial inner self or ground. Dōgen describes buddha-nature as "vast emptiness", "the world of becoming" and writes that "impermanence is in itself Buddha-nature". According to Dōgen: Therefore, the very impermanency of grass and tree, thicket and forest is the Buddha nature. The very impermanency of men and things, body and mind, is the Buddha nature. Nature and lands, mountains and rivers, are impermanent because they are the Buddha nature. Supreme and complete enlightenment, because it is impermanent, is the Buddha nature.Takashi James Kodera writes that the main source of Dōgen's understanding of buddha-nature is a passage from the Nirvana sutra which was widely understood as stating that all sentient beings possess buddha-nature. However, Dōgen interpreted the passage differently, rendering it as follows: All are (一 切) sentient beings, (衆生) all things are (悉有) the Buddha-nature (佛性); the Tathagata (如来) abides constantly (常住), is non-existent (無) yet existent (有), and is change (變易). Takashi explains that "whereas in the conventional reading the Buddha-nature is understood as a permanent essence inherent in all sentient beings, Dōgen contends that all things are the Buddha-nature. In the former reading, the Buddha-nature is a change less potential, but in the latter, it is the eternally arising and perishing actuality of all things in the world." Thus for Dōgen buddha-nature includes everything, the totality of "all things", including inanimate objects like grass, trees and land (which are also "mind" for Dōgen). Time-Being Dōgen's conception of Being-Time or Time-Being (Uji, 有時) is an essential element of his metaphysics in the Shōbōgenzō. According to the traditional interpretation, "Uji" here means time itself is being, and all being is time." Uji is all the changing and dynamic activities that exist as the flow of becoming, all beings