The book
The book
Listen to Carlo Rovelli reading an extract from Chapter 4: Particles

Even if we observe an empty region of space, in which there are no atoms, we still detect a minute swarming of these particles. There is no such thing as a real void, one that is completely empty. Just as the calmest sea looked at closely sways and trembles, however slightly, so the fields that form the world are subject to minute fluctuations.

Listen to Carlo Rovelli reading an extract from Chapter 4: Particles