2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45532This talk is dedicated to honor the memory of Professor S.N. Bose. I survey the crucial roles played by Bose-Fermi symmetry in all recent attempts at higher unification, which include the ideas of (i) the conventional approach to grand unification; (ii) the preonic approach; and (iii) superstrings.Plain TeX, 3 figures; to appear in the Proceedings of ``Bose and Twentieth Century Physics''High Energy Physics - PhenomenologyHigh Energy Physics - Theorytext