Does Evil Really Exist?

As to thy question, "That Abdul-Baha hath said to some of the believers that evil never exists, nay rather, it is a non-existent thing:" This is but truth, inasmuch as the greatest evil is (man's) going astray and being veiled from Truth. Error is lack of guidance; darkness is absence of light; ignorance is lack of knowledge; falsehood is lack of truthfulness; blindness is lack of sight; and deafness is lack of hearing. Therefore, error, blindness, deafness and ignorance are non-existent things. If we say that according to the text of the Bible, "God hardened Pharaoh's heart" that he might not believe in Moses, this signifies that, verily, He did not soften his heart. And when we wish to say that God hath not guided a certain one of His servants, this would be interpreted (by people) that God led him astray. The darkness spoken of in the Bible as being created by God, signifieth that, verily, God hath not caused light to shine; inasmuch as where there is no light, there will be darkness; when there is no sight, there will be blindness; when there is no life, there will be death; when there is no riches, there will be poverty; and when there is no knowledge, there will be ignorance. Consequently, it is proven by indisputable argument and clear explanation that, verily, evils are non-existent, but people have not understood the meaning of the verses of the Bible. (Abdu'l-Baha, Tablets of Abdu'l-Baha v3, p. 609)