September 15

It is also very important to hold study classes and go deep in the teachings. A great harm is done by starting to teach without being firmly grounded in the literature. "Little knowledge is dangerous" fully applies to the teaching work. The friends should read the Writings to be able to quote from the Tablets when discussing subjects pertaining to the Faith. 

- Shoghi Effendi  (From a letter dated 9 May 1932 written on behalf of Shoghi Effendi to an individual believer; The Compilation of Compilations, vol. I, The Importance of Deepening Our Knowledge and Understanding of the Faith)