The grammatical, morphological and phonological differences between the spoken Egyptian language and the Arabic language is sufficiently disparate to categorize them into two distinct groups, and the similarities between the first and its Egyptian ancestors, both Coptic and ancient Egyptian, are strong enough to consider the modern Masri Egyptian language an evolution of Ancient Egyptian.
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Andil also published many articles and books, in which he proposed that Modern Masri Egyptian language is nothing but the fourth stage of the languages of the Egyptians, and should not truly be considered a variety of Arabic, but rather a linguistic evolution of the Coptic language and the Ancient Egyptian language.
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He believed that Egyptian culture is the outcome of an agriculture-based civilisation and that Egyptian forefathers were the first to establish the solar calendar, the bases of medicine and geometry.
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In his books delineating the achievements of the Egyptians, Andil quoted James H. Breasted to support his hypothesis that the ancient Egyptians were the first to create a system of writing, in addition to referring to the arguments of linguistics scholar Simon Potter over the leading role of the Egyptian alphabet.