(4) [...] [...] [...] [...] [...] [...] [...] [...] [...] [...] ... [...] [...] knowledge."

(26) In addition to the simple ignorance which is the most potent factor in mental growth there exists another, which is of a far more dangerous and subtle type. This second form, called twofold or complex ignorance, may be briefly defined as ignorance of ignorance. Worshiping the sun, moon, and stars, and offering sacrifices to the winds, the primitive savage sought with crude fetishes to propitiate his unknown gods. He dwelt in a world filled with wonders which he did not understand. Now great cities stand where once roamed the Crookboned men. Humanity no longer regards itself as primitive or aboriginal. The spirit of wonder and awe has been succeeded by one of sophistication. Today man worships his own accomplishments, and either relegates the immensities of time and space to the background of his consciousness or disregards them entirely.