FREE LESSONAgrippa
A map of the three worlds
Use the first page to draw Agrippa’s chain of causes, then turn the arrows around to see the course of study he proposes.
6 min readOpen lesson
The great library FREE LESSON 
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THE FIRST DOOR IS ALWAYS OPENBegin with
Begin with
a little wonder.
A complete first lesson from every collection. Follow a question, meet the old books, and find the subject that draws you in.
Find your first readingA PLACE TO BEGIN
What calls to you?
Choose a subject, or wander through them all.
10 free lessons in Stars, numbers & music
Clear filters FREE LESSON FREE LESSONAgrippa
A wonder made with numbers
Follow the flying dove and the curved mirror through page 168 to see where Agrippa places mathematics among the magical arts.
6 min readOpen lesson
FREE LESSONLucidarium
An hour has more than one name
Explain how hourly and daily government work together.
12 min readOpen lesson
FREE LESSONThe Key
Two clocks in one day
Reconstruct the planetary-hour sequence, explain its weekday pattern, and connect particular planets with the purposes assigned to them.
16 min readOpen lesson
FREE LESSONArbatel
Meet the seven Olympic governors
Connect each governor with its planetary sphere and attributed offices, and explain how the work distinguishes a natural process from a miraculous intervention.
16 min readOpen lesson
FREE LESSONRaziel
The celestial key: one world, seven planets and twelve realms
Explain the key's parts and use the book's planetary and geometrical relationships to distinguish a general power from its changing condition.
20 min readOpen lesson
FREE LESSONThe Infernal Key
A key beneath seven lights
Explain how the opening image places the manuscript’s promised power beneath a higher authority.
12 min readOpen lesson
FREE LESSONFludd’s Harmonies
Enter the Temple of Music
Identify the different subjects inside Fludd’s Temple of Music and distinguish a teaching diagram from a building plan.
14 min readOpen lesson
FREE LESSONPalmistry
The hand as a little cosmos
Explain why Saunders begins a book about hands with planets and the zodiac, and distinguish the observed hand from its proposed cosmic meaning.
14 min readOpen lesson
FREE LESSONTetrabiblos
Two kinds of foreknowledge
Distinguish astronomical calculation from Ptolemy’s conditional art of judging effects.
12 min readOpen lesson
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