The world is not a collection of things, it is a collection of events. A stone is prototypical ‘thing’: we can ask ourselves where it will be tomorrow. Conversely, a kiss is an 'event’. It makes no sense to ask where the kiss will be tomorrow. The world is made up of networks of kisses, not of stones. On closer inspection, in fact, even the things that are most 'thing-like’ are nothing more than long events.
| Carlo Rovelli