… the complete and entire elimination of the ego would imply
perfection -- which man can never completely attain -- but the ego can and
should be ever-increasingly subordinated to the enlightened soul of man. This
is what spiritual progress implies.
- Shoghi Effendi (From a letter dated 14 December 1941
written on behalf of Shoghi Effendi to an individual believer; The Compilation
of Compilations vol II)