Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

Man has likewise a number of spiritual powers: the power of imagination, which forms a mental image of things; thought, which reflects upon the realities of things; comprehension, which understands these realities; and memory, which retains whatever man has imagined, thought, and understood. The intermediary between these five outward powers and the inward powers is a common faculty, a sense which mediates between them and which conveys to the inward powers whatever the outward powers have perceived. It is termed the common faculty as it is shared in common between the outward and inward powers (56:2)

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