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. Bahá’u’lláh, The Summons of the Lord of Hosts. Available from www.bahai.org/r/125003930