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Gene Keys Profile · Key 42 of 64

Key 42, 益 Yì: wind and thunder strengthening each other

Key 42 is 益 Yì, thunder below wind, the hexagram of increase: the upper gives to the lower, and both grow. Our three words for its bands come from the top line, where no one adds and someone strikes, the Image's moving towards the good, and the fifth line's kind heart that needs no asking.

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Key 42, hexagram 益 Yì, drawn as six lines numbered from the bottom: whole, broken, broken, broken, whole, whole. Beside it, our words for its three bands: Kindness for the Siddhi band, Improvement for the Gift band, Self-seeking for the Shadow band. Below, the zodiac drawn as a straight strip from 0° Aries, with the key's span from 20°45′ Aries to 26°22′30″ Aries marked. 1 2 3 4 5 6 Key 42 Siddhi band Kindness Gift band Improvement Shadow band Self-seeking Ari Tau Gem Can Leo Vir Lib Sco Sag Cap Aqu Pis On the wheel: 20°45′ Aries to 26°22′30″ Aries
Hexagram 42 from the bottom line up, our three words for its bands, and its place on the wheel's 360 degrees, drawn straight. Our own drawing.

Facts

Number
Key 42 of 64, numbered as hexagram 42 of the I Ching
Hexagram
益 Yì ䷩
Trigrams
☳ 震 Thunder below, ☴ 巽 Wind / wood above
Our gloss
increase
Shadow band (our word)
Self-seeking
Gift band (our word)
Improvement
Siddhi band (our word)
Kindness
Opposite key
32 恆 Héng, every line reversed
On the wheel
20°45′ Aries to 26°22′30″ Aries
Human Design
Gate 42, in the Sacral centre

Meaning

益 means to increase, to add, to benefit. The figure is key 12 with its fourth line moved to the bottom: something taken from above and given below, so the lower is enriched and the whole grows. Thunder and wind, the eldest son and the eldest daughter, each strengthen the other. The statement of the hexagram is wholly favourable: it is good to have somewhere to go, and good to cross the great river. Our gloss is increase. The text is on the hexagram 42 page.

We read increase as growth of any kind that comes from giving. Key 42 pairs with key 41, the same figure turned over; its opposite on the wheel is key 32.

The three bands

The Shadow band, Self-seeking, is the top line, 莫益之, 或擊之, 立心勿恆: no one adds to him, someone may strike him, his heart is not steady. It is taking more and giving nothing back. The Gift band, Improvement, is the Image, 君子以見善則遷, 有過則改: the noble person, seeing good, moves towards it, and having faults, corrects them. The Siddhi band, Kindness, is the fifth line, 有孚惠心, 勿問元吉: with a sincere and kind heart, there is no need to ask; supreme good fortune.

The three bands describe growth by taking, by mending and by giving.

In a profile

Key 42 belongs to no particular row. It stands in a profile wherever one of the thirteen bodies stood between 20°45′ Aries and 26°22′30″ Aries at birth or at the design moment, and so it can fill any of the thirteen rows or the three further tags.

The Sun passes through it each year from about 11 to 16 April. People born then have key 42 as their Life's Work and its opposite, key 32, as their Evolution, the Earth's place. For people born about three months later, from about 11 to 16 July, it is the Radiance, where the Sun stood at the design moment.

Each of its six lines is 56′15″ wide. A position from 20°45′ Aries is in line 1, read by our theme Foundation; one from 25°26′15″ Aries is in line 6, Overview. Every key's lines take the same six themes of ours, and the line of a fast body like the Moon depends on the birth time to the hour.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

Hexagram and number
益 Yì, hexagram 42 in the received (King Wen) order of the Zhouyi; Legge (1882) writes the name Yî sourced
Trigram images
Thunder below, Wind / wood above, as the Shuo Gua names them sourced
Our gloss
increase: EsoTerrier's own, the same in our I Ching chart, not a translator's title our construction
Our words for the three bands
Self-seeking, Improvement and Kindness, written in October 2026 from the hexagram's own texts; none is one of Rudd's words our construction
Opposite on the wheel
Key 32, 180° round the wheel, with every line reversed; Rudd calls it the programming partner sourced
Pair in the received order
Key 41, 損 Sǔn: the same six lines turned upside down, next to it in the received order sourced
Within and upside down
Lines 2 to 5 give 23 剝 Bō; the figure turned upside down gives 41 損 Sǔn sourced
Codon ring (Rudd)
Rudd groups this key in his Ring of Life and Death, which he ties to leucine: his grouping and his choice of amino acid, not a finding of genetics sourced
Place on the wheel
Gate 42 of Ra Uru Hu's wheel (1987 to 1989), 20°45′ Aries to 26°22′30″ Aries (20.75° to 26.375° of tropical longitude): a modern placing, not the I Ching's sourced

How the schools read it

The Zhouyi, after Legge (1882)
Advantage in every movement that is undertaken, and in crossing the great stream. The text in full is on the hexagram 42 page.
Human Design (Ra Uru Hu, 1987 onward)
Gate 42, in the Sacral centre. The parent system gives the gate its own name and reading, which are Jovian Archive's and which we do not give here.
Richard Rudd, The Gene Keys (2009)
Key 42, read at three bands he calls the Shadow, the Gift and the Siddhi, each with a word of his own, under a chapter title of his own; we reproduce neither. He names key 32 its programming partner.
EsoTerrier
Increase that flows downward: it takes more and gives nothing back, moves towards the good when it sees it and mends faults when it finds them, and at its peak is kindness that never needs to be asked.

Claims about it

  • Key 42 is a code held in the genes, and contemplating it changes how they are expressed.

    unverified

    What the record shows: The central metaphor of Rudd's system, given by its author, not a finding. The profile is the positions of thirteen bodies at two moments, read on a 64-part wheel; no gene, codon or measurement of the body enters it.

  • Key 42 belongs to the Ring of Life and Death, a chemical family in the body tied to leucine.

    unverified

    What the record shows: Rudd's grouping. His ring sizes follow the real number of codons per amino acid in the genetic code, but which hexagram goes with which codon is his own choice, and nothing in genetics links a hexagram to an amino acid.

  • The place of key 42 on the zodiac, 20°45′ Aries to 26°22′30″ Aries, is an old I Ching teaching.

    false

    What the record shows: The wheel is Ra Uru Hu's, fixed between 1987 and 1989 by turning Shao Yong's 11th-century circle of the hexagrams so that hexagram 41 begins at 2° Aquarius. No Chinese source we know ties the hexagrams to degrees of the zodiac.

Elsewhere on EsoTerrier

Sources

Primary texts (2)
  1. Richard Rudd, The Gene Keys: Unlocking the Higher Purpose Hidden in Your DNA. Gene Keys Publishing, 2009 (first edition, 576 pages). In copyright; facts only. openlibrary.org/isbn/9780578038551
  2. James Legge (translator), The Yî King, Sacred Books of the East XVI. Oxford: Clarendon Press, 1882. Public domain. en.wikisource.org/wiki/Sacred_Books_of_the_East/Volume_16
Studies and other sources (5)
  1. Gene Keys, "Codon Rings" (read 13 October 2026). genekeys.com/resource/codon-rings
  2. Gene Keys, "Programming Partners" (updated 19 April 2025). genekeys.com/docs/programming-partners
  3. Jovian Archive, "Gates and hexagrams in Human Design". jovianarchive.com/pages/gates-and-hexagrams-in-human-design
  4. Gene Keys, the 64 per-key pages (genekeys.com/gene-key-1/ to /gene-key-64/), read 9 and 13 October 2026; cited for the existence of Rudd's words and titles, which we do not reproduce. genekeys.com/gene-key-1
  5. Unicode Consortium, Yijing Hexagram Symbols, U+4DC0 to U+4DFF (code chart). unicode.org/charts/PDF/U4DC0.pdf
Our own research (5)
  1. EsoTerrier, Gene Keys validation: 944 synthetic births against an independent implementation, three open-source engines and three calculators, 12 October 2026.
  2. EsoTerrier calculation engine: the Gene Keys and Human Design services and their documentation.
  3. EsoTerrier, Human Design research: the wheel, hexagram 41 at 2° Aquarius, 5.625° per gate, checked against Shao Yong's circle, 9 October 2026.
  4. EsoTerrier, I Ching knowledge records (the 64 hexagrams' characters, lines, trigrams and Legge's names).
  5. EsoTerrier, engine audit of 14 October 2026: the 192 band words and lines rewritten from the hexagram texts, with the passage each rests on, then checked against Rudd's table.

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By EsoTerrier. Written with AI assistance from our research and checked against its sources; last revised 20 October 2026. How we write these pages.

First published ; last revised . Corrections: support@esoterrier.com.