NĀSIR KHUSRAW: Knowledge and liberation, a treatise on philosophical theology: a new edition and English translation of the Gushāyish wa rahāyish by Faquir M. Hunzai, with an introduction and commentary by Parwiz Morewedge. xii, 132, 92 pp. London and New York: I. B. Tauris (in association with The Institute of Ismaili Studies, London), 1998. £25. ANNEMARIE SCHIMMEL (ed. and trans.): Make a shield from wisdom: selected verses from Nāsir-i Khusraw's Dīvān. (Revised edition) vii, 103 pp. London and New York: I. B. Tauris (in association with The Institute of Ismaili Studies, London), 2001. £12.95. ALICE C. HUNSBERGER: Nasir Khusraw, the ruby of Badakhshan: a portrait of the Persian poet, traveller and philosopher. (Ismaili Heritage Series, 4.) xxiii, 292 pp. 4 pl. London and New York: I. B. Tauris (in association with The Institute of Ismaili Studies, London), 2000.