Quotes from Carlo Rovelli

But structures are processes are not there so that organisms can survive and reproduce. It is the other way round: organisms survive and reproduce because these structures have happened to gradually develop. They reproduce to populate the Earth because they are functional.

We often say that causes precede effects and yet, in the elementary grammar of things, there is no distinction between "cause" and "effect.

as Lucretius wrote: 'our appetite for life is voracious, our thirst for life insatiable

I may not know something with certainty, but I can still assign a lesser or greater degree of probability to something.

the particles are quanta of quantum fields; light is formed by quanta of a field; space is nothing more than a field, which is also made of quanta;

it is simply a process that degrades and consumes the low entropy of food; it is a self-structured disordering, no more and no less than in the rest of the universe.

the world is made entirely from quantum fields

Even the words that we are speaking now thieving time has stolen away, and nothing can return. (I, 11)

Albert Einstein, yak?n dostu ?talyan Michele Besso öldü?ünde onun k?z karde?ine dokunakl? bir mektu yazm??t?: "Michele bu garip dünyadan benden biraz önce ayr?ld?. Bunun hiçbir anlam? yok. Bizim gibi fizi?e inanan insanlar, geçmi?, ?imdi ve gelecek aras?ndaki ayr?m?n sürüp giden inatç? bir yan?lsamadan ba?ka bir ?ey olmad???n? bilir.

The crucial point here is the difference from what happens with falling bodies: a ball may fall, but it can also come back up, by rebounding, for instance. Heat cannot. This is the only basic law of physics that distinguishes the past from the future.

It is the limit up to which we can determine physical variables.

Light is thus nothing more than a rapid vibration of the spiderweb of Faraday's lines, which ripple like the surface of a lake as the wind blows. It isn't true that we "do not see" Faraday lines. To "see" is to perceive light, and light is the movement of the Faraday lines.

New knowledge emerges from present-day knowledge because within it there are contradictions, unresolved tensions, details that don't add up, fracture lines.

Where are these quanta of space? Nowhere. They are not in space because they are themselves the space. Space is created by the linking of these individual quanta of gravity. Once again, the world seems to be less about objects than about interactive relationships.

The nature of time is perhaps the greatest remaining mystery. Curious threads connect it to those other great open mysteries: the nature of mind, the origin of the universe, the fate of black holes, the very functioning of life on Earth. Something essential continues to draw us back to the nature of time.

Siamo nodi di una rete di scambi, di cui questo libro è un tassello, nella quale ci passiamo immagini, strumenti, informazioni e conoscenza. Ma del mondo che vediamo siamo anche parte integrante, non siamo osservatori esterni. Siamo situati in esso. La nostra prospettiva su di esso è dall'interno. Siamo fatti degli stessi atomi e degli stessi segnali di luce che si scambiano i pini sulle montagne e le stelle nelle galassie.

Why do we remember the past and not the future? Do we exist in time, or does time exist in us? What does it really mean to say that time "passes"? What ties time to our nature as persons, to our subjectivity? What am I listening to when I listen to the passing of time?

It is the presence of abundant traces of the past that produces the familiar sensation that the past is determined.

If the world is a swarm of ephemeral quanta of space and matter, a great jigsaw puzzle of space and elementary particles, then what are we? Do we also consist only of quanta and particles? If so, then from where do we get that sense of individual existence and unique selfhood to which we can all testify? And what then are our values, our dreams, our emotions, our individual knowledge? What are we, in this boundless and glowing world?

This is Dirac's quantum mechanics: a recipe for calculating the spectra of the variables, and a recipe for calculating the probability that one or another value in the spectrum appears during an interaction.

Uzay - zaman?n kuantum dalgalanmalar?n?n yaratt??? bas?nc?n maddenin a??rl???n? dengeledi?i bir y?ld?z?n ya?am?n?n bu varsay?msal sona erme durumuna "Planck y?ld?z?" ad? verilir.

What happens between one interaction and the next is not mentioned in the theory. It does not exist.

Dirac's quantum mechanics thus allows us to do two things. First, to calculate which values a physical variable may assume. This is called "calculation of the spectrum of a variable"; it captures the granular nature of things.

Because science shows us how to better understand the world, but it also reveals to us just how vast is the extent of what is still not known. The