And likewise He saith: The heaven of true understanding shineth resplendent with the light of two luminaries: tolerance and righteousness. O my friend! Vast oceans lie enshrined within this brief saying. Blessed are they who appreciate its value, drink deep therefrom and grasp its meaning, and woe betide the heedless. This lowly one entreateth the people of the world to observe fairness, that their tender, their delicate and precious hearing which hath been created to hearken unto the words of wisdom may be freed from impediments and from such allusions, idle fancies or vain imaginings as ‘cannot fatten nor appease the hunger’, so that the true Counsellor may be graciously inclined to set forth that which is the source of blessing for mankind and of the highest good for all nations. Bahá’u’lláh, Tablets of Bahá’u’lláh Revealed After the Kitáb-i-Aqdas. Available from https://reference.bahai.org/en/t/b/TB/tb-12.html#pg169