The Corpus Hermeticum

"The Corpus Hermeticum" are the core documents of the Hermetic tradition. 
The Hermetic tradition represents a non-Christian lineage of Hellenistic Gnosticism. The tradition and its writings date to at least the first century B.C.E., and the texts we possess were all written prior to the second century C.E. The surviving writings of the tradition, known as theCorpus Hermeticum (the "Hermetic body of writings") were lost to the Latin West after classical times, but survived in eastern Byzantine libraries. Their rediscovery and translation into Latin during the late-fifteenth century by the Italian Renaissance court of Cosimo de Medici, provided a seminal force in the development of Renaissance thought and culture. These eighteen tracts of the Corpus Hermeticum, along with the Perfect Sermon (also called the Asclepius), are the foundational documents of the Hermetic tradition. 

The texts presented in "The Corpus Hermeticum" are taken from the translation made by George Robert Stowe Mead in 1906.