Some Ans. Questions 1908 by -'Abdu'l-Bahá- 1 Para

If the earth is not cultivated, it becomes a jungle where useless weeds grow; but if a cultivator comes and tills the ground, it produces crops which nourish living creatures. It is evident, therefore, that the soil needs the cultivation of the farmer. Consider the trees: if they remain without a cultivator, they will be fruitless, and without fruit they are useless; but if they receive the care of a gardener, these same barren trees become fruitful, and through cultivation, fertilization and engrafting the trees which had bitter fruits yield sweet fruits. These are rational proofs; in this age the peoples of the world need the arguments of reason (7:2)

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