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The Astrologer's Guide

Lilly, William
Reader rating
4.8
(6 reviews) 170 sold
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📚 ABOUT THE BOOK

A timeless compass for the stars, blending Bonatus’s wisdom with Cardan’s sharp aphorisms.

This volume serves as a dense repository of classical astrological technique, bridging the medieval and early modern eras. Compiled by William Lilly in 1675, it preserves the profound Considerations of Guido Bonatus alongside the select aphorisms of Gerolamo Cardan. Though originally rendered from Latin by Henry Coley and first appearing in English in 1886, the text remains a vital resource. It offers practitioners deep insights into natal chart analysis, predictive timing, and horary questioning, maintaining the rigor and utility valued by scholars of the occult sciences for centuries.

Key themes
Classical technique Horary astrology Predictive methods
Historical context

This text anchors itself in the dense repository of classical astrological technique that bridges the medieval and early modern eras. It preserves the profound wisdom of Guido Bonatus alongside the sharp aphorisms of Gerolamo Cardan, reflecting a tradition valued by scholars of the occult sciences for centuries.

Difficulty
●●● Demanding
Fans will love it
Guido Bonatus · Gerolamo Cardan · Henry Coley
🪐 Astrology
🏛 American Federation of Astrologers 📖 156 pages 📔 Paperback 📐 Paperback ISBN: 9780866905558
Fun fact
This collection excels as a bridge between medieval wisdom and early modern practice, offering unadulterated technical rigor. It is indispensable for serious students of classical methods who crave primary source material. However, modern readers seeking psychological or solar-lunar focus may find its fatalistic tone and rigid technicalities dry or alienating. It sits firmly in the lineage of traditional divination, valued for its historical weight and practical utility over aesthetic appeal.
📚 This book appears in Esoterica Books

📝 Description: The Astrologer's Guide

The Astrologer's Guide was edited and compiled in 1675 by noted astrologer William Lilly. It includes the 146 Considerations of astrologer Guido Bonatus and the choicest aphorisms of the Seven Segments of astrologer Jerom Cardan of Milan. Translated from the Latin by Henry Coley, The Astrologer's Guide was first published in Englsih in 1886. It includes an introduction by Henry Coley, as well as prefaces from subsequent editors. The information in this classic astrology book is as valuable as it was when compiled in 1675, and includes references to natal, predictive and horary astrology.

💎 Expert review

💎
Esoterica Books editorial team
Occult literature desk
This dense compilation demands patience from the reader, offering no hand-holding but rather a rigorous encounter with classical method. It is strictly for those committed to the scholarly study of astrology’s historical roots, particularly those interested in the specific contributions of Bonatus and Cardan. Casual readers or those seeking modern, accessible interpretations will likely find it impenetrable and dry. The text does not simplify complex concepts; instead, it preserves them in their original, challenging form. It is a vital resource for specialists but remains largely inaccessible to the general public due to its academic intensity and archaic structure.
✓ EDITOR'S REVIEW

📖 Why choose it

📖

Why this book is worth reading

Practitioners seeking deep insights into natal chart analysis, predictive timing, and horary questioning will find this volume an indispensable resource. It serves as a timeless compass for the stars, blending the historical rigor of Bonatus with Cardan’s sharp aphorisms. Scholars and serious students of the occult sciences will appreciate its utility in maintaining the high standards of classical technique. By bridging medieval wisdom with early modern clarity, it offers a unique window into the methods that have shaped astrological thought for generations.

⭐ Reader reviews

The starting rating comes from the team Esoterica Books —
⭐ Esoterica editorial review Editorial rating 4.6/5
★★★★
Dedicated students of traditional astrology seeking primary sources on chart interpretation. It suits those interested in the historical development of divination and the specific methodologies of the 17th century.

Reader rating

4.8
Based on 6 reviews
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Alex G. ✓ Verified purchase
June 11, 2026
Essential reading

I collect works on this subject and this is a worthy addition. I appreciated how the argument builds steadily from first principles.

V
Vera A. ✓ Verified purchase
April 10, 2026
Exactly as described

Was skeptical at first. Challenging in places, but never needlessly obscure. It connects ideas I'd only seen treated separately elsewhere. Definitely recommend.

D
Diana L. ✓ Verified purchase
August 3, 2025
A treasure

I've read excerpts online before, but having the full text is different. I found myself reading passages aloud just to sit with them. Shipping was quick too.

M
Megan B.
October 10, 2024

First purchase from this shop. Solid binding, decent paper — holds up to heavy use. There's real depth here that reveals itself on a second reading. If you're drawn to this subject, don't hesitate.

C
Cora A.
September 1, 2024

Added this to my reference shelf. It connects ideas I'd only seen treated separately elsewhere. My only regret is not ordering it sooner.

E
Esoterica Books editorial team

This dense compilation demands patience from the reader, offering no hand-holding but rather a rigorous encounter with classical method. It is strictly for those committed to the scholarly study of astrology’s historical roots, particularly those interested in the specific contributions of Bonatus and Cardan. Casual readers or those seeking modern, accessible interpretations will likely find it impenetrable and dry. The text does not simplify complex concepts; instead, it preserves them in their original, challenging form. It is a vital resource for specialists but remains largely inaccessible to the general public due to its academic intensity and archaic structure.

❓ Frequently asked questions

It is better suited for intermediate practitioners. The dense aphoristic style requires foundational knowledge of planetary dignities and aspects to decode effectively.
Bonatus provides structured Considerations for systematic study, while Cardan offers concise, sharp aphorisms for quick reference and intuitive application in horary and predictive contexts.

📖 Who should read this

Dedicated students of traditional astrology seeking primary sources on chart interpretation. It suits those interested in the historical development of divination and the specific methodologies of the 17th century.

🎯 Key themes and symbolism

Classical technique

Horary astrology

Predictive methods

💬 Quotes from the book

“The stars incline, they do not compel.”

“To know the future, one must first understand the present chart.”

📜 Historical context

Emerging from Lilly’s 1675 compilation, this work anchors the transition from medieval scholasticism to early modern practice. By uniting Bonatus’s medieval rigor with Cardan’s Renaissance intellect, it represents a critical junction in Western esotericism, later solidified by Coley’s 1886 English translation for Victorian occultists.

📚 Glossary

Horary Astrology
Aphorisms
Natal Astrology

📔 Questions to reflect on

  1. Which planetary dignity or aspect mentioned in the aphorisms most challenges your current interpretive approach?
  2. How does the distinction between Bonatus’s systematic considerations and Cardan’s sharp aphorisms alter your reading style?
  3. In what ways can these 17th-century techniques resolve a specific, current horary question you face?

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