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

For example, when you look at man, you see that he is weak. This very weakness of the creature is a proof of the power of the Eternal Almighty One, because, if there were no power, weakness could not be imagined. Then the weakness of the creature is a proof of the power of God; for if there were no power, there could be no weakness; so from this weakness it becomes evident that there is power in the world. Again, in the contingent world there is poverty; then necessarily wealth exists, since poverty is apparent in the world. In the contingent world there is ignorance; necessarily knowledge exists, because ignorance is found; for if there were no knowledge, neither would there be ignorance. Ignorance is the nonexistence of knowledge, and if there were no existence, nonexistence could not be realized (5:5)

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