FIRST CONVERSATION
RESURRECTIO PRÆTERITI
[ Part I ] [ Part II ] [ Part III ]
Death -- The soul -- The hour of death -- Separation of the soul -- Sight of the soul in Heaven -- The Solar System in the heavens -- The Earth as seen from the heavens -- The Star Capella -- Velocity of light -- The terrestrial planet seen from afar -- The worlds seen from afar -- Lumen -- Lumen sees again his own life.

SECOND CONVERSATION
REFLUUM TEMPORIS
[ Part I ] [ Part II ]
Journey on a ray of light -- Events retraced -- Re-ascending the Ages -- Psychical optics -- Light and sound -- Man organised from the planet -- The soul and destiny.

THIRD CONVERSATION
HOMO HOMUNCULUS
The sphere of human observation -- Time and space -- Events in space -- Time, space, and eternity.

FOURTH CONVERSATION
ANTERIORES VITÆ
[ Part I ] [ Part II ] [ Part III ] [ Part IV ]
Space and light -- The star Gamma in Virgo -- The system of Gamma in Virgo -- Former existence -- The plurality of existences -- The unknown -- The constellations -- The elements -- Life on the Earth -- The process of alimentation -- Nutritive atmospheres -- Poetry on the Earth -- A humanity -- The organisation of beings -- The development of life -- The genealogical tree of life -- The men-plants -- Souls and atoms -- Other senses -- Atoms and monads.

FIFTH CONVERSATION
INGENIUM AUDAX: NATURA AUDACIOR
A world in Orion -- Analysis of the nervous system -- The Commune -- Animated molecules -- Various forms of life -- Infinite diversity on Sirius -- Phosphorescent passions -- Lives too long -- Infinite diversity -- The magnifying power of time -- A chrono-telescope -- Light.