"... cleanse your hearts from every trace of the love or hate of the peoples of the world, lest aught should divert you from one course or impel you towards another."

"Say: O people! We have commanded you in Our Tablets to strive, at the time of the promised Revelation, to sanctify your souls from all names, and to purify them from all that hath been created in the heavens or on the earth, that therein may appear the splendours of the Sun of Truth which shineth forth above the horizon of the Will of your Lord, the Almighty, the Most Great. We have, moreover, commanded you to cleanse your hearts from every trace of the love or hate of the peoples of the world, lest aught should divert you from one course or impel you towards another. This, verily, is among the weightiest counsels I have vouchsafed unto you in the perspicuous Book, for whoso attacheth himself to either of these shall be prevented from attaining a proper understanding of Our Cause. To this beareth witness every just and discerning soul."

-Bahá'u'lláh, The Summons of the Lord of Hosts, Súriy-i-Haykal, pp.49-50