May 10

Although the secretaries of the Guardian convey his thoughts and instructions and these messages are authoritative, their words are in no sense the same as his, their style certainly not the same, and their authority less, for they use their own terms and not his exact words in conveying his messages. 
(From a letter dated 25 February 1951 written on behalf of Shoghi Effendi to the National Spiritual Assembly of the British Isles, ‘Unfolding Destiny: The Messages from the Guardian of the Bahá'í Faith to the Bahá'í Community of the British Isles)