He [Shoghi Effendi] thought that Townshend's book 'Christ
and Bahá'u'lláh' exceeded Dr. Esselmont's book in greatness. We must use Dr.
Townshend's book because it portrays the Kingdom of God on Earth. 
When the Mashriqu’l-Adhkar, with its accessories, is
established in the world, aside from its religious or spiritual influence, it
will have a tremendous effect upon civilization. Aside from the religionists,
who will feel its influence, materialists will not be exempt therefrom.
Moreover, it contains divine wisdoms, spiritual effects upon the intellects and
thoughts. Subsequent to its erection these will become evident.
The most important thing in this day is the speedy erection
of the edifice. Its mystery is great and cannot be unveiled as yet. In the
future it will be made plain.
He [Shoghi Effendi] explained that official members of the
Baha'i community are those who confess their belief in the Bab, the Abha
Beauty, and 'Abdu'l-Baha and are proud to be known as Baha'is. However,
everyone should be accorded absolute freedom to choose whether to join the
Baha'i community or not. However since Baha'is should not participate in
politics even in their conversations, it is very important not to accept into
the Faith under any circumstances those who do participate in politics. This is
very important.