2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33794In this lecture I build up the motivation for relativity and gravitation based on general principles and common sense considerations which should fall in the sphere of appreciation of a general reader. There is a novel way of looking at things and understanding them in a more direct physical terms which should be of interest to fellow relativists as well as physicists in general.This is the Vaidya - Raichaudhary Endowment Fund Award Lecture delivered on 30th Jan. 01 at the 21st meeting of IAGRG, held at NagpurGeneral Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - TheoryClassical Physicstext