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" In the entire vista of Malay literature—including even the Indonesian literatures—he was unique. None rivalled him in originality and poetic genius; in Malay Sufi literature none excelled the clarity and flowing simplicity of his prose which, nevertheless, reveals profound metaphysical insight in the Sufi doctrines; none exceeded him in poetry, whether it be in terms of literary output or in terms of intellectual content. He was, as I have earlier shown, the first man to set forth in systematic writing the essential aspects of the Şufi doctrines in Malay, and he not only impressed his influence upon certain historiographically important literary usages in Malay literature, but introduced as well new technical terminologies and concepts into the Malay language in general, and into Malay Sufi literature in particular, having do with theology, metaphysics and philosophy. "
― Syed Muhammad Naquib al-Attas ,