2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/108667I give an overview of the motivations for gravitational-wave research, concentrating on the aspects related to ``fundamental'' physics.12 pages, 2 figures, to appear in "Sense of Beauty in Physics", a Volume in honour of the 70th birthday of Adriano Di GiacomoGeneral Relativity and Quantum Cosmologytext