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

The animal spirit is that all-embracing sensory power which is realized through the composition and combination of the elements. When this composition disintegrates, that spirit likewise perishes and becomes non-existent. It may be likened to this lamp: When oil, wick, and flame are brought together and combined, it is lit; and when this combination disintegrates- that is, when the constituent parts are separated from one another- the lamp also is extinguished (55:4)

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