2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109225Our present Worldview can not be imagined without the seminal ideas of Albert Einstein.16 pages, 12 figures, plenary invited lecture at the Joint International Scientific Meeting of the Belgian Physical Society and the French Physical Society, August 29 to September 2, 2005, Lille, France, to be published in Physicalia Magazine (2006), E-mail address: jozef.devreese@ua.ac.beHistory and Philosophy of Physicstext