The author recalls a conversation about an ancient text called the Maka Hanya Haramita Shingyo, translating to the Great Most Excellent Wisdom Heart Sutra. One particular phrase, "Shiki fu i ku, ku fu i shiki," lingered in the author's mind, reflecting an abstract concept. This phrase hints at the impermanent nature of existence, suggesting that everything we perceive around us is not solid or enduring.

The explanation provided by Old Jiko adds to the complexity, as it emphasizes the idea that all things, from nature to ourselves, are in a constant state of flux. This transient notion challenges the idea of permanence in the physical world, leading to a profound realization about existence and our place within it.