“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,
Heraclitus
The Gospel of Saint John
The Letter of Saint Paul
Meister Eckhart
Dante
Goethe’s Faust

~Carl Jung; Letters Volume 1; Page 89