Hermes Trismegistus + Astrology: Hermetic Astrology

BY NICOLE LAU

Hermes Trismegistus is the father of astrology—the divine sage who revealed the celestial wisdom to humanity. Hermetic astrology is not fortune-telling, but a sacred science based on the principle "as above, so below"—the stars and planets reflect and influence earthly events and human consciousness. Understanding Hermetic astrology reveals the cosmos as a living, intelligent system, and yourself as a microcosm of the macrocosm.

This is the celestial wisdom of the Thrice-Great One.

Hermes as the Father of Astrology

The Astrological Tradition

Why Hermes = Astrology:

• Thoth (Egyptian Hermes) was god of the moon and time
• Created the calendar, measured celestial cycles
• Greek Hermes was messenger between heaven and earth
• Astrology = reading messages from the heavens
• Hermetic texts contain extensive astrological teachings

Historical Development:

• Ancient Egypt: Decans, star clocks, astronomical observations
• Babylonian astrology: Zodiac, planetary omens
• Hellenistic synthesis: Greek philosophy + Egyptian wisdom + Babylonian technique
• Hermetic astrology emerges in Greco-Roman Egypt (1st-3rd century CE)
• Becomes foundation of Western astrology

The Hermetic Foundation of Astrology

"As Above, So Below"

The Core Principle (from Emerald Tablet):

• "What is above is like what is below"
• The macrocosm (cosmos) reflects the microcosm (human)
• Celestial patterns mirror earthly patterns
• The stars don't cause events—they reflect them
• Synchronicity, not causation

Astrological Application:

• Your birth chart = map of the cosmos at your birth
• The planetary positions reflect your soul's pattern
• Transits reflect current cosmic energies
• You are a living embodiment of the heavens

The Living Cosmos

Hermetic Cosmology:

• The universe is alive, ensouled
• Planets are living beings, not dead rocks
• Each planet has consciousness, intelligence
• The zodiac is a living mandala
• Astrology = communication with cosmic intelligence

The Seven Classical Planets

The Hermetic Planets

The Seven Visible Planets (Ancient Astrology):

1. Saturn ♄ (Kronos):

• The Greater Malefic
• Time, limitation, structure, karma
• The teacher through restriction
• Lead in alchemy
• Saturday

2. Jupiter ♃ (Zeus):

• The Greater Benefic
• Expansion, wisdom, abundance, faith
• The generous king
• Tin in alchemy
• Thursday

3. Mars ♂ (Ares):

• The Lesser Malefic
• Action, courage, conflict, desire
• The warrior
• Iron in alchemy
• Tuesday

4. Sun ☉ (Helios):

• The Light, the Self
• Consciousness, vitality, purpose, identity
• The king
• Gold in alchemy
• Sunday

5. Venus ♀ (Aphrodite):

• The Lesser Benefic
• Love, beauty, harmony, values
• The lover
• Copper in alchemy
• Friday

6. Mercury ☿ (Hermes):

• The Messenger
• Communication, intellect, adaptability
• The trickster
• Quicksilver in alchemy
• Wednesday
• Hermes' own planet!

7. Moon ☽ (Selene):

• The Reflector
• Emotion, intuition, the unconscious
• The mother
• Silver in alchemy
• Monday

The Planetary Spheres

Hermetic Cosmology:

• Earth at center (geocentric view)
• Seven planetary spheres surrounding Earth
• Each sphere = a level of consciousness
• The soul descends through the spheres at birth
• Ascends through them after death
• Each planet imprints qualities on the soul

The Twelve Signs of the Zodiac

The Zodiacal Mandala

The Twelve Signs:

Fire Signs (Spirit, Action):

• ♈ Aries: The Initiator, cardinal fire
• ♌ Leo: The Creator, fixed fire
• ♐ Sagittarius: The Seeker, mutable fire

Earth Signs (Matter, Stability):

• ♉ Taurus: The Builder, fixed earth
• ♍ Virgo: The Analyst, mutable earth
• ♑ Capricorn: The Achiever, cardinal earth

Air Signs (Mind, Communication):

• ♊ Gemini: The Communicator, mutable air
• ♎ Libra: The Harmonizer, cardinal air
• ♒ Aquarius: The Visionary, fixed air

Water Signs (Emotion, Intuition):

• ♋ Cancer: The Nurturer, cardinal water
• ♏ Scorpio: The Transformer, fixed water
• ♓ Pisces: The Mystic, mutable water

The Zodiac as Alchemical Process

The Zodiacal Journey:

• Aries: Birth, initiation (Nigredo begins)
• Taurus: Grounding, embodiment
• Gemini: Learning, communication
• Cancer: Feeling, nurturing
• Leo: Creating, expressing (Citrinitas)
• Virgo: Refining, purifying (Albedo)
• Libra: Balancing, relating
• Scorpio: Transforming, dying (Nigredo deepens)
• Sagittarius: Seeking, expanding
• Capricorn: Achieving, mastering
• Aquarius: Liberating, innovating
• Pisces: Dissolving, transcending (Rubedo)

Hermetic Astrological Texts

Ancient Sources

1. Corpus Hermeticum (Books on Astrology):

• Book III: On the creation and planetary influences
• Book XVI: Definitions of Asclepius to King Ammon (astrological)
• Planetary theology integrated with philosophy

2. The Asclepius:

• Discusses cosmic sympathy
• How celestial and terrestrial realms connect
• The soul's journey through planetary spheres

3. Technical Hermetica:

• Practical astrological texts
• Attributed to Hermes or Nechepso-Petosiris
• Horoscopy, electional astrology, medical astrology

Medieval and Renaissance Hermetic Astrology

Key Texts:

• Picatrix (11th century): Hermetic astral magic
• Marsilio Ficino's De Vita (1489): Hermetic medical astrology
• Agrippa's Three Books of Occult Philosophy (1533): Hermetic planetary magic
• All based on Hermetic principles

Hermetic Astrological Principles

1. Cosmic Sympathy

The Principle:

• All things are connected
• What affects one affects all
• The cosmos is a web of correspondences
• Planets, plants, stones, organs—all linked

2. The Doctrine of Signatures

The Teaching:

• Everything bears the signature of its planetary ruler
• Mars plants are red, spiky, hot (like Mars)
• Venus plants are beautiful, fragrant, harmonious
• By observing signatures, you know correspondences

3. Electional Astrology

Choosing the Right Time:

• Different times have different qualities
• Choose auspicious moments for important actions
• Align your actions with cosmic currents
• Work with the heavens, not against them

4. Medical Astrology

Hermetic Medicine:

• Each planet rules body parts and organs
• Diseases have astrological causes
• Treatment must consider planetary influences
• Timing of treatment matters

The Birth Chart as Alchemical Map

Your Cosmic Blueprint

The Hermetic View:

• Your birth chart = your soul's alchemical formula
• The planets at birth = the ingredients
• Your life = the alchemical process
• Your goal = to transmute the chart into gold

Reading the Chart Hermetically:

• Sun = your gold, your essence, what you're becoming
• Moon = your silver, your soul, your emotional nature
• Ascendant = your vessel, your body, how you appear
• Saturn = your lead, your challenges, what must be transmuted
• Jupiter = your expansion, your wisdom, your growth

Practical Hermetic Astrology

Working with Planetary Days and Hours

The Practice:

• Each day ruled by a planet (Sunday = Sun, Monday = Moon, etc.)
• Each hour of the day ruled by a planet (planetary hours)
• Perform activities aligned with the ruling planet
• Sunday: Solar work (success, vitality)
• Monday: Lunar work (emotions, intuition)
• Tuesday: Mars work (courage, action)
• Wednesday: Mercury work (communication, learning)
• Thursday: Jupiter work (expansion, abundance)
• Friday: Venus work (love, beauty)
• Saturday: Saturn work (discipline, structure)

Planetary Invocations

Calling on Planetary Intelligences:

• Each planet has a spirit/intelligence
• Can be invoked for specific purposes
• Done during planetary day/hour
• Using planetary symbols, colors, incenses
• Hermetic theurgy (divine magic)

Conclusion: The Celestial Wisdom

Hermetic astrology is not about predicting the future or blaming the stars for your problems. It's about understanding the cosmic patterns that you embody, the celestial energies you're working with, and the alchemical process your soul is undergoing. Your birth chart is your alchemical formula. Your life is the Great Work. The planets are your teachers.

Hermes Trismegistus teaches that you are not separate from the cosmos—you ARE the cosmos, in miniature. As above, so below. As within, so without. Know the stars, and you know yourself. Know yourself, and you know the stars.

The next article explores "Hermes Trismegistus + Magic: Hermetic Theurgy"—the divine magic of the Thrice-Great One.

As you explore the celestial dance between Hermes Trismegistus and the stars, let the cosmic alignment ritual kit for syncing with the celestial flow anchor your practice in the rhythms of the cosmos, while the astrology map yoga mat becomes your sacred ground for meditation under the night sky. For deeper journaling on these hermetic correspondences, the tarot journaling prompts 100 questions for self discovery can help you uncover the wisdom written in your own astrological chart, inviting you to become an alchemist of your own soul's journey.