" He is no mean poet, and his verse can rouse or persuade even if his logic fail to convince. His message is not for the Mohammedans of India alone, but for Moslems everywhere: accordingly he writes in Persian instead of Hindustani—a happy choice, for amongst educated Moslems there are many familiar with Persian literature, while the Persian language is singularly well adapted to express philosophical ideas in a style at once elevated and charming. "

― Muhammad Iqbal , The Secrets of the Self: A Philosophical Poem 1944