- Meditation, Prayer, and Spiritualization, by Universal House of Justice (1983-09-01). — Practicing personal spirituality and methods for achieving spiritual growth.
- Spiritual Growth, Essential Requisites for, by Universal House of Justice (1983-09-01). — Letter to Europe; its historically-recent turn away from religion, six ways to improve spirituality,...
- Spiritualization of the Bahá'í Community: A Plan for Teaching, by National Spiritual Assembly of the Bahá'ís of Ireland, Adib Taherzadeh (1982). — A three-part collection consisting of a letter from the NSA of Ireland, a letter from Taherzadeh to ...
- "Tablet of the True Seeker" from the Kitáb-i-Íqán (Book of Certitude), The, by Bahá'u'lláh, Shoghi Effendi, trans. (1931). — Guidance to the true seeker, a passage from the Kitab-i-Íqan (Book of Certitude).
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