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  • Anima Astrologiae

    Eight Rules from Guido Bonatus for Judging Horary Questions

    Guido Bonatus sets out eight considerations (62–69) that can influence the outcome of a horary question, covering the Moon’s condition, aspects from benefics and malefics, eclipses, the seventh house in illness charts, and procedures when significators are equally strong. These rules illustrate how medieval astrologers applied detailed criteria to assess the likely success or failure of a matter.

  • Tetrabiblos

    Planetary Patterns and Mental Disorder in Ancient Astrological Diagnosis

    Classical astrological doctrine held that the relative placement of Mercury and the moon, together with the malefic and benefic planets, could indicate psychological and behavioral conditions ranging from epilepsy and insanity to extremes of sexual conduct. This account sets out the specific configurations believed to produce each condition, whether the resulting afflictions were considered curable or incurable, and how the positions of Mars, Venus, Saturn, and Jupiter were thought to shape the character of the disorder.