It is not uniformity which we should seek in the formation of any national or local assembly. For the bedrock of the Bahá'í administrative order is the principle of unity in diversity, which has been so strongly and so repeatedly emphasized in the writings of the Cause. Differences which are not fundamental and contrary to the basic teachings of the Cause should be maintained, while the underlying unity of the administrative order should be at any cost preserved and insured. Unity, both of purpose and of means is, indeed, indispensable to the safe and speedy working of every Assembly, whether local or national. (From a letter written on behalf of Shoghi Effendi, 'Dawn of a New Day')