The Conquest of Persia
If you ask me what is the most important event in the history of Islam, I shall say without any hesitation: “The Conquest of Persia.” The battle of Nehawand gave the Arabs not only a beautiful country, but also an ancient civilization; or, more properly, a people who could make a new civilisation with the Semitic and Aryan material. Our Muslim civilisation is a product of the cross-fertilisation of the Semitic and the Aryan ideas. It is a child who inherits the softness and refinement of his Aryan mother, and the sterling character of his Semitic father. But for the conquest of Persia, the civilisation of Islam would have been one-sided. The conquest of Persia gave us what the conquest of Greece gave to the Romans.