5. Regularity through the ages
7. Mappa mundi
8. Orientation
9. Continents
11. Four seasons
13. Four ages
14. Gold, silver, bronze and iron
18. Roma quadrata
21. Early beginnings of Europe
23. Four representatives of change
26. Four representatives of crisis
27. New names for old feelings
30. The number four
32. To a new therapy
34. Games, Fortuna and the Future
35. Thoughts of an elementary nature
37. Holding the Boat of Million Years
39. A Tear of Kronos
43. The End of Times
46. The curriculum in ancient times
47. Four humores
50. The rule of four
51. A conveyance for gods and heroes
52. Preference for the four-fold