De Septem Secundeis: Seven Secondary Causes

Johannes Trithemius is best known for his steganographia, but his less notorious works are no less interesting. Here, in de septem secundeis, we have a fusion of history and occultism, regarding celestial and angelic categorizations, used to predict the future as well as correspond past events to the different characteristics of the secondary causes- the seven angels with their seven planets. Trithemius, in his age, thus delivered this knowledge to then-emperor Maximilian of the Holy Roman Empire, and this same system can be expanded infinitely into the past or future.