God has created such union and harmony between man and wife that no one can conceive in this world a greater plane of union. You must irrigate continually the tree of your union with the water of love and affection, so that it may remain green and verdant throughout all the seasons, producing the most luscious fruits for the healing of the nations.
- ‘Abdu’l-Baha (Excerpt from a talk, December 22, 1918, Haifa; Star of the West, vol. 11, no. 1, March 21, 1920)