Zen, known as Chan in Chinese, is a school of Mahāyāna Buddhism that arose in China and later spread to Korea, Japan, Vietnam, and beyond. The very term “Zen” derives from the Chinese “Chan,” itself rooted in the Sanskrit “dhyāna,” meaning meditation, signaling how central contemplative practice is to this tradition. It is often associated with a “special transmission outside the scriptures,” pointing to a way of awakening that does not lean primarily on conceptual study or ritual. Rather than treating doctrine as the main road to liberation, Zen regards it as a secondary, supportive tool, always subordinate to direct realization.

At the heart of Zen lies the conviction that awakening is an immediate, lived possibility grounded in one’s present mind. Practice is oriented toward a direct, non-conceptual recognition of one’s true nature—often described as kenshō or satori—rather than toward accumulating theoretical knowledge. This is closely tied to the teaching that all beings already possess Buddha-nature, and that spiritual practice is the unfolding or realization of what is inherently present. Zen thus cultivates a non-dual awareness that sees through the apparent separation between self and world, while emphasizing the emptiness of all phenomena.

The primary method for this realization is meditation, especially seated meditation known as zazen. In zazen, practitioners cultivate a clear, non-grasping awareness, sometimes through “just sitting” and sometimes by working with a specific question or theme. Alongside this, Zen employs kōans—paradoxical stories, questions, or “public cases”—to undermine habitual patterns of thought and open the way to direct insight beyond discursive reasoning. These methods are often framed as part of a direct transmission from teacher to student, stressing experiential understanding over reliance on words.

Zen also extends practice into the fabric of everyday life, treating ordinary activities as fields of awakening. Eating, walking, working, and other simple actions become occasions to embody mindful presence and non-dual awareness. In this way, Zen does not confine realization to the meditation hall but seeks its expression in each moment of daily conduct. The tradition is often associated with the possibility of sudden enlightenment, followed by ongoing integration, where insight is continually deepened and expressed in the midst of ordinary circumstances.