In the treasuries of the knowledge of God there lieth concealed a knowledge which, when applied, will largely, though not wholly, eliminate fear. This knowledge, however, should be taught from childhood, as it will greatly aid in its elimination... (Baha’u’llah, The Compilation of Compilations, vol. I, Baha’i Education) [1]
[1] Regarding this passage, an extract from a letter dated 5 January 1948 written on behalf of Shoghi Effendi to an individual believer states: "Unfortunately it would seem that the knowledge 'which could largely eliminate fear' has not been disclosed or identified by Bahá'u'lláh; so we do not know what it is”. (The Compilation of Compilations, vol. I, Baha’i Education) This extract is also published in Bahá'í News 210 (August 1948), p. 3