May 6

…whatsoever thing is arranged in harmony and with love and purity of motive, its result is light, and should the least trace of estrangement prevail the result shall be darkness upon darkness.... 
- ‘Abdu’l-Baha  (Cited in a letter dated 5 March 1922 written by Shoghi Effendi to the Bahá'ís of the United States and Canada, published in ‘Bahá'í Administration: Selected Messages 1922-1932’)