Letters of C. G. Jung: Volume I, 1906-1950 (Vol 1)

“The ten pillars of the “bridge of the spirit which spans the morass of human history”:

Gilgamesh Epic
The I Ching
The Upanishads
The Tao-te-Ching,
The Gospel of Saint John
The Letter of Saint Paul
Meister Eckhart
Goethe’s Faust

~Carl Jung; Letters Volume 1; Page 89