Zazen, or seated meditation, is considered the core of Zen practice. It is a form of meditation that involves sitting in a specific posture and focusing on the breath. In Zen, the mind plays a crucial role in Zazen, as it is believed to be the source of all suffering and the key to enlightenment.

The mind in Zazen is seen as a powerful tool that can either hinder or aid one's practice. It is often described as a wild and untamed horse that needs to be trained and controlled. In other words, the mind is seen as a restless and constantly wandering entity that needs to be calmed and focused in order to achieve a state of inner peace and clarity.

One of the main goals of Zazen is to quiet the mind and enter a state of non-thinking, known as "no-mind" or "beginner's mind." This is achieved through the practice of focusing on the breath and letting go of any thoughts or distractions that may arise. By doing so, the mind becomes still and clear, allowing one to see things as they truly are without the influence of our thoughts and emotions.

The mind is also seen as the source of our attachments, desires, and aversions, which are believed to be the root cause of suffering. Through the practice of Zazen, one learns to observe their thoughts and emotions without getting caught up in them. This detachment from the mind allows for a deeper understanding of oneself and the world around us.

Furthermore, the mind in Zazen is also seen as a gateway to enlightenment. By quieting the mind and entering a state of no-mind, one can experience a sense of oneness and interconnectedness with all beings. This state of mind is often described as a state of pure awareness and is believed to be the key to achieving enlightenment.

In conclusion, the role of the mind in Zazen is crucial. It is both the source of our suffering and the key to our liberation. Through the practice of seated meditation, we learn to calm and control our minds, leading to a deeper understanding of ourselves and the world around us. Ultimately, the goal of Zazen is to transcend the limitations of the mind and experience a state of pure awareness and enlightenment.