Courtesy is, in truth,

O King! We heard the words thou didst utter in answer to the Czar of Russia, concerning the decision made regarding the war. Thy Lord, verily, knoweth, is informed of all. Thou didst say: "I lay asleep upon my couch, when the cry of the oppressed, who were drowned in the Black Sea, wakened me." This is what We heard thee say, and, verily, thy Lord is witness unto what I say. We testify that that which wakened thee was not their cry but the promptings of thine own passions, for We tested thee, and found thee wanting. Comprehend the meaning of My words, and be thou of the discerning.
It is not Our wish to address thee words of condemnation, out of regard for the dignity We conferred upon thee in this mortal life. We, verily, have chosen courtesy, and made it the true mark of such as are nigh unto Him. Courtesy is, in truth, a raiment which fitteth all men, whether young or old. Well is it with him that adorneth his temple therewith, and woe unto him who is deprived of this great bounty.

The Summons of the Lord of Hosts, Napoleon III .P 72 Bahá’u’lláh