For the intention, the power and the action, all the three essential elements are brought together and the realization of everything in the contingent world dependeth upon these three principles.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v3, p. 691)
Mere knowledge of anything is not sufficient. We all know that justice is good, but there is need for volition and executive force to carry it out. For example, should we think it good to build a church, simply thinking of it as being a good thing will not help its erection. We must will to build it. Then wealth is needed for its erection; simply thinking will not be sufficient.
(Compilations, Bahá’í Scriptures, p. 317)
The attainment of any object is conditioned upon knowledge, volition and action. Unless these three conditions are forthcoming, there is no execution or accomplishment. In the erection of a house it is first necessary to know the ground, and design the house suitable for it; second, to obtain the means or funds necessary for the construction; third, actually to build it.
(‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 157)
While many will be inspired, after reading the compilation, to cast aside their fears and misgivings and their sense of inadequacy, and will arise to speak forth announcing the glad-tidings of the Kingdom to their fellow-men, many more will still be in need of loving education and more detailed guidance on the part of the institutions of the Faith, and patient and wise prodding before they are aroused to action.
(Universal House of Justice, The Individual and Teaching - Raising the Divine Call, p. vii- viii )