In her series of articles dedicated to Human Design and Relationship, Marga delves today into the significance of the Lines, starting from the I Ching

In Human Design, there is another element that is directly connected to relationships: the level of harmony and resonance between the Lines of the different Gates. This is expressed through the dual nature of the Lines of different Gates within Channels, through electromagnetic and other forms of connection in a composite chart, and, especially, through the comparison of Profiles – one of the fundamental elements of a Human Design chart.
But before we can explore this fascinating dimension of relationship dynamics, we need to take a small detour and go back to the source: the ancient Chinese Book of Changes through the 64 hexagrams of the I Ching, which constitute the root on which the 64 Gates of Human Design and the 64 Gene Keys are based.
So to speak, each and every Gate in our bodygpraph/chart and composite charts, take their numbers from the numbers of the hexagrams in the I Ching. For example, Hexagram 1, Chen, The Sky, or The Creative, becomes Gate 1, Creativity. And so on so forth till Gate 64… It is the same for the 64 Gene Keys, where Richard Rudd has layered the multifaced meanings of the 64 hexagrams into three frequencies: Shadow, Gift and Siddhi. Hexagram 1 becomes: Entropy, Freshness, Beauty.
The I Ching and the Structure of the Lines
The I Ching, or Book of Changes, is one of the great classical texts of Chinese culture. At its heart is the principle of change and transformation, expressed through a system of 64 hexagrams.
Each hexagram is composed of six Lines, and the Lines have two fundamental forms: the unbroken Line, associated with Yang, and the broken Line, associated with Yin. Three Lines form a trigram, and each hexagram is a six-Line configuration composed of two trigrams.
The eight trigrams are traditionally associated with Heaven, Earth, Thunder, Wind, Water, Fire, Mountain, and Lake. Their combinations create the 64 hexagrams that form the central structure of the I Ching.
The I Ching originated as a system of divination and, over the centuries, developed into a broader philosophical and moral system. The commentaries traditionally attributed to Confucius contributed greatly to this development, extending the interpretation of the hexagrams into questions of human conduct, ethical principles, self-cultivation, how a wise person has to behave.
The work became particularly influential in the West, in the early twentieth century, through Richard Wilhelm’s German translation. It subsequently became the basis for the English edition translated by Cary F. Baynes, for which Carl Gustav Jung wrote the foreword. Jung was deeply interested in the I Ching’s conception of meaningful correspondences between inner and outer events, which contributed to bringing the text to a wider Western audience.
The Lines in the I Ching
To understand the meaning of the Lines, we need to begin with their function within the I Ching.
As we have said, the Line, yáo, is the fundamental unit through which the hexagrams are constructed. There are two forms: the unbroken Line, associated with Yang, and the broken Line, associated with Yin. Three Lines form a trigram; a hexagram is a six-Line configuration composed of two trigrams. The six Lines constitute an ordered structure in which every position participates in the overall configuration of the hexagram.
The numbering always proceeds from the bottom upward. The first Line therefore occupies the base of the hexagram, while the sixth occupies the uppermost position. The first three Lines constitute the lower trigram and the last three the upper trigram. The movement from bottom to top belongs to the structure of the hexagram itself and establishes the sequence through which the six positions relate to one another.
The distinction between even and odd positions also belongs to the traditional structure of the I Ching. The odd-numbered positions – first, third, and fifth – are associated with Yang; the even-numbered positions – second, fourth, and sixth – with Yin. From this derives the principle of positional correctness: a Yang Line placed in an odd position and a Yin Line placed in an even position express a correspondence between the polarity of the Line and the nature of its position. This relationship is one of the elements through which the structure of the hexagram is interpreted.
Each position also possesses a specific function within the two trigrams. The second and fifth positions are the central positions of their respective trigrams and have particular importance in the interpretive tradition. The fifth position, in particular, is associated with the central and authoritative position of the hexagram.
The six positions therefore form an ordered sequence in which each Line acquires its meaning through the place it occupies within the larger configuration.
This structure is fundamental because every hexagram has a general text and, at the same time, a specific text for each of its six Lines. The texts of the Lines, known as yáocí, are an integral part of the I Ching: the position of a Line is a component of the meaning of the hexagram.
The foundation from which we approach the Lines is therefore the relationship between the polarity of Yin and Yang, its position within the hexagram, and the process expressed by the entire configuration.
Hexagram 10 – Treading
This brings us to the point at which the six positions of the Lines acquire another dimension of meaning within the Human Design system.
Ra Uru Hu derived the description of the Lines in Human Design from the Hexagram 10, Treading, openly connected to 6 different behaviors and ways to approach life.
Hexagram 10 – Treading provides the fundamental reference from which the six Human Design Line qualities and their names are derived. Its image is that of approaching something powerful and potentially dangerous with care. The essential theme is how we conduct ourselves when we are in close contact with a greater force.
Treading upon the tail of the tiger. It does not bite the man. Success.
The six Lines of Hexagram 10 describe six distinct expressions of conduct:
Line 1 – Simple conduct. Progress brings no blame.
The first Line begins with simplicity. There is no need to make a display of oneself or to complicate the situation. One proceeds naturally, following a straightforward course.
Line 2 – Treading a smooth, easy path. The perseverance of a dark man brings good fortune.
The path here is open and level. The person remains inwardly quiet and independent, without becoming disturbed by what happens around them. Stability comes from remaining centered.
Line 3 – A one-eyed man is able to see; a lame man is able to tread. He treads on the tail of the tiger. The tiger bites the man. Misfortune. A warrior acts in the place of the great ruler.
This is the critical Line of the hexagram. The person has only a limited capacity, yet acts as though that capacity were sufficient. The danger arises from a mismatch between one’s actual ability and the situation one chooses to confront.
Line 4 – Treading on the tail of the tiger. Caution and fear. In the end, good fortune.
Here there is awareness of danger. Fear becomes a form of vigilance rather than paralysis. Because the person recognizes the situation for what it is, they can proceed carefully and reach a favorable outcome.
Line 5 – Resolute conduct. Perseverance with awareness of danger.
This Line brings determination and authority, yet the danger remains. Firmness does not remove the risk inherent in the situation. The ability to act decisively must remain accompanied by awareness.
Line 6 – Look at your conduct and examine the signs. If everything is complete, there is supreme good fortune.
At the end of the journey, the entire course of conduct can be observed and evaluated. The final Line looks back over the path that has been taken and recognizes its outcome. Completion brings the possibility of great good fortune.
From the I Ching Lines to the Human Design Lines
It is from this foundation that Human Design develops its own interpretation of the six Line positions.
The six Lines become six distinct archetypal expressions:
Line 1 – Investigator
The first Line seeks a solid foundation through investigation, research, and understanding. Its movement is toward depth and security through knowledge.
Line 2 – Hermit
The second Line carries a natural quality. It has an inherent talent that can emerge spontaneously and often requires periods of withdrawal and solitude.
Line 3 – Martyr
The third Line learns through direct experience. Its path involves experimentation, discovery, adaptation, and the wisdom that emerges from lived experience.
Line 4 – Opportunist
The fourth Line operates through relationships, influence, and its immediate network. Its opportunities arise through the people and connections that form its social environment.
Line 5 – Heretic
The fifth Line carries a universalizing quality. Others can project expectations onto it, while it has the capacity to offer practical solutions and influence a wider field.
Line 6 – Role Model
The sixth Line develops through a longer process of observation, maturation, perspective, and embodiment. It ultimately expresses what can be learned through lived experience and integrated into one’s way of being.
These six names and qualities became part of the traditional Human Design language of the Lines and Profiles. Their development continued through the work of different Human Design teachers and schools.
A particularly important reference is Chetan Parkyn and Evolutionary Human Design, which places the Lines and Profiles within an evolutionary approach to Human Design. This is the current of Human Design in which I also place my own work: an approach that understands Human Design as a tool for evolution, awareness, and the unfolding of individual potential.
Within this evolutionary perspective, the Line archetypes can be explored with greater flexibility and depth. The nomenclature becomes a language through which we can recognize patterns of experience and development rather than a fixed system of definitions that limits the individual.
The work of Chetan Parkyn, together with the extensive development of the Lines within Gene Keys and the contributions of other evolutionary approaches to Human Design, has opened an increasingly rich field for understanding these six fundamental archetypes.
The Lines are one of the most powerful ways in which we relate to one another: through them we attract or repel each other, understand each other or fail to understand each other. They meet one another within Channels, within Profiles, within individual charts, and within the composite field created between two or more people. Their interaction creates patterns of resonance, attraction, tension, complementarity, and learning.
This is where the real alchemy of the Lines begins.
In Part 2, we will go into detail about how these relationships between the Lines express themselves within Human Design, and how we can read them in individual and composite charts.
Sources
- Richard Wilhelm, The I Ching or Book of Changes. English translation by Cary F. Baynes. Princeton University Press.
- Chetan Parkyn, The Book of Lines: A 21st Century View of the I Ching, the Chinese Book of Changes. CreateSpace Independent Publishing Platform, 2012.
- Ra Uru Hu, The Book of Letters
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Related articles
- Marga’s whole series on Osho News: Human Design and Relationship
- Marga’s 12-article series: Three Channels a Month
- List of links to Gates and Channels
- Marga’s monthly Transits
Featured image, Remolina and Joselito, based on a photo by the author, with background prompted to ChatGPT

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