How to Read “色即是空、空即是色”
Shiki soku ze kū, kū soku ze shiki
Meaning of “色即是空、空即是色”
“Color is emptiness, emptiness is color” demonstrates that the visible material world and its essence of emptiness are one and indivisible.
This phrase expresses the fundamental Buddhist truth that the things and phenomena we usually think of as “certainly existing” actually have no fixed substance and are established through various conditions. At the same time, it teaches that precisely because there is no substance, various phenomena can appear as infinite possibilities.
This expression is used when facing life’s sufferings and attachments, or when deeply contemplating the essence of things. For example, it is used when conveying to someone trapped by failure or setbacks that their situation is not permanent but is one of the continuously changing phenomena. In modern times, it is often understood as an opportunity to be freed from excessive attachment to material wealth and status, and to reconsider a more essential way of living.
Origin and Etymology
Actually, “Color is emptiness, emptiness is color” is not a Japanese proverb, but rather words expressing a fundamental Buddhist teaching. This phrase comes from the core section of the Buddhist scripture called the Heart Sutra.
The Heart Sutra is one of the important scriptures of Mahayana Buddhism, and despite being only 262 characters long, it condenses the profound wisdom of Buddhism. This scripture was translated into Chinese and transmitted to Japan from the Asuka period to the Nara period.
“Color” is a Buddhist term referring to all visible material phenomena. On the other hand, “emptiness” represents the truth that all existence lacks fixed substance. In other words, “color is emptiness” means “material phenomena have no substance,” and “emptiness is color” means “precisely because there is no substance, phenomena can appear.”
This teaching is based on the Madhyamaka philosophy established by the Indian bodhisattva Nagarjuna, and is deeply connected with the thought of “dependent origination,” which holds that all existence is established through mutual interdependence. In Japan, it spread mainly through Zen Buddhism and greatly influenced spiritual cultures such as tea ceremony and martial arts. Even today, it is beloved by many people and is often used as a life guide.
Interesting Facts
While the Heart Sutra is one of the world’s shortest scriptures, this section “Color is emptiness, emptiness is color” is considered the most profound teaching of Buddhist philosophy. Interestingly, the character “soku” (即) meaning “immediately” or “directly” is used twice in these eight characters, emphasizing that color and emptiness are not separate things but are the front and back of the same single truth.
Moreover, these words are deeply connected with the spirit of “ichigo ichie” (one time, one meeting) in Japanese tea ceremony. The idea that encounters at tea gatherings and beautiful tea utensils are all momentary phenomena born from dependent origination, and therefore possess irreplaceable value, has been influenced by this teaching.
Usage Examples
- I made a big mistake at work, but thinking of “color is emptiness,” this situation is not permanent either
- Even after obtaining something I wanted so much, I couldn’t feel satisfied – this is exactly the teaching of “emptiness is color”
Modern Interpretation
In modern society, “Color is emptiness, emptiness is color” is increasingly understood in new contexts of the digital age. The “ideal self” created on social media and experiences in virtual worlds can be said to embody the relationship between “color” and “emptiness.”
In the information society, we are constantly surrounded by vast amounts of information and tend to accept them as “reality.” However, online information, evaluations, and digital relationships are also merely phenomena established through various conditions. This ancient teaching overlaps with modern people’s movements seeking digital detox and essential human relationships.
Also, as interest in sustainability and environmental issues grows, it is gaining attention as a guideline for reconsidering attachment to material wealth. It is often received as words that encourage a shift from a lifestyle of constantly seeking “more and more” in consumer society to a way of living that “knows when enough is enough.”
On the other hand, in modern times it is sometimes interpreted nihilistically as “everything is meaningless,” but this differs from the original meaning. The true teaching explains that precisely because there is no substance, there are infinite possibilities, and therefore the importance of living this present moment preciously.
When AI Hears This
In the world of quantum physics, particles like electrons and photons drift as ambiguous entities in what’s called a “superposition state” until they are observed. This is a mind-bending phenomenon where particles exist simultaneously in multiple locations and hold multiple states, completely overturning our common sense. Only through the act of observation does this ambiguous existence finally reveal its “color” as one definite reality.
As Heisenberg’s uncertainty principle demonstrates, it’s fundamentally impossible to accurately measure both the position and momentum of matter simultaneously. In other words, the matter we think “certainly exists” is actually in a state of “emptiness” that can only be described by probabilistic wave functions.
Even more astonishing is the phenomenon of quantum entanglement. Particles that have once interacted continue to influence each other instantaneously, no matter how far apart they are. This shows that individual matter doesn’t exist independently, but rather everything exists within interdependent relationships.
In modern string theory, even the smallest units of matter are conceived as vibrating “strings,” with no fixed substance existing at all. The insight of the Heart Sutra, which declared “form is emptiness, emptiness is form” 2,500 years ago, intuitively grasped the very essence of reality at the quantum level. This alignment between ancient meditative insight and cutting-edge science speaks to the profound depth of human perceptual capacity.
Lessons for Today
What “Color is emptiness, emptiness is color” teaches us today is the courage to accept change without fear. The worries and difficulties you face now are not permanent. At the same time, current happiness and success are not taken for granted, which is precisely why you can savor them more deeply.
This teaching liberates us from perfectionism. Failure and success are all part of transient phenomena. Therefore, rather than being elated or dejected by results, we can come to value the process itself.
In modern society, we tend to be captivated by the number of “likes” on social media and comparisons with others. However, these too are “empty” phenomena. What is truly important is the state of your own heart in this present moment.
Seeking material wealth is not a bad thing. However, not being too attached to it and not forgetting gratitude. And finding equal value in invisible things—love, friendship, inner growth. This is the most important message that this ancient wisdom gives to the modern world.


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