"For the infidel, error—for the faithful, faith; For Aṭṭár’s heart, an atom of Thy pain."

" ... In this city the heaven of ecstasy is upraised and the world-illuming sun of yearning shineth, and the fire of love is ablaze; and when the fire of love is ablaze, it burneth to ashes the harvest of reason.

Now is the traveler unaware of himself, and of aught besides himself. He seeth neither ignorance nor knowledge, neither doubt nor certitude; he knoweth not the morn of guidance from the night of error. He fleeth both from unbelief and faith, and deadly poison is a balm to him. Wherefore Aṭṭár 1 saith:

For the infidel, error—for the faithful, faith;
For Aṭṭár’s heart, an atom of Thy pain."

-Bahá'u'lláh, The Seven Valleys And the Four Valleys, p. 8

1. Faríḍu’d-Dín Aṭṭár (ca. 1150–1230 A.D.), the great Persian Súfí poet.