He fully approves the idea of holding study classes, for the deeper the friends go in their understanding of their teachings the more firm and steadfast they will become and the more unwavering in their support of the institutions of the Faith. Books such as the "Íqán", "Some Answered Questions" and "The Dawn-Breakers" should be mastered by every Bahá'í. They should read these books over and over again. The first two books will reveal to them the significance of this divine revelation as well as the unity of all the Prophets of old. The last book will show you how the Faith was ushered into the world and how its early adherents heroically faced martyrdom and suffering in their desire to establish the Cause throughout the world. Knowing the life of those heroes will create in us the urge to follow their footsteps and achieve the same.
- Shoghi Effendi (From a letter dated 9 June 1932 written on behalf of Shoghi Effendi; The Compilation of Compilations vol. I)