In spite of its striking successes the standard model of particle physics has obvious shortcomings, most notably its inability to deal with a consistent quantum version of our leading theory of gravity, Einstein's General Relativity. I will explain in simple terms a new framework in which the concept of particles as point-like objects is replaced by that of vibrating quantum-relativistic strings. The almost magic properties of these tiny objects could eventually provide a finite and unified quantum theory of all particles and interactions.