Zazen, also known as seated meditation, is considered the core practice of Zen Buddhism. It is a form of meditation where one sits in a specific posture, usually cross-legged, and focuses on their breath and being present in the moment. The purpose of Zazen is to cultivate a state of mindfulness and awareness, leading to a deeper understanding of oneself and the nature of reality.

The primary goal of Zazen is to quiet the mind and allow for a clear and direct experience of reality. This is achieved through the practice of "just sitting," where the meditator simply observes their thoughts and sensations without judgment or attachment. By doing so, one can gain insight into the impermanent and ever-changing nature of the mind and the world.

Another purpose of Zazen is to develop a sense of equanimity and non-attachment. Through the practice of sitting still and observing the mind, one can learn to let go of distractions and desires, leading to a sense of inner peace and contentment. This detachment from external factors allows for a deeper understanding of the true self, beyond the ego and societal conditioning.

Zazen also serves as a means of self-reflection and introspection. By sitting in stillness, one can observe their thoughts, emotions, and habits, gaining insight into their inner workings. This self-awareness can lead to personal growth and the breaking of harmful patterns and habits.

In Zen Buddhism, the ultimate goal is to achieve enlightenment or "awakening" to one's true nature. Zazen is seen as a crucial step in this journey, as it allows one to transcend the limitations of the mind and experience a direct connection with the universe. Through regular practice, one can attain a state of clarity, wisdom, and inner peace, leading to a deeper understanding of the self and the world.

In conclusion, the purpose of Zazen is to cultivate mindfulness, detachment, self-awareness, and ultimately, enlightenment. It serves as a powerful tool for self-discovery and personal growth, leading to a more peaceful and fulfilling life. As Zen master Dogen famously said, "Just sitting, nothing else." Through the simple act of sitting in stillness, one can unlock the profound wisdom and insights of Zazen.