Every cubic centimeter of space, and every second that passes, is the result of this dancing foam of extremely small quanta. 
Our intuitions have developed on the basis of our limited experience. 
Here, on the edge of what we know, in contact with the ocean of the unknown, shines the mystery and beauty of the world. And it's breathtaking. 
due to the limitations of our consciousness we perceive only a blurred vision of the world and live in time. 
What does what we know or don't know have to do with the laws that govern the world? 
what does it mean, our being free to make decisions, if our behavior does nothing but follow the predetermined laws of nature? 
Life on Earth gives only a small taste of what can happen in the universe. 
Don't trust your teachers. 
The present is like the flatness of Earth: an illusion. We 
Scientific answers are not definitive: they are, almost by definition, the best ones that we have at any given time. Consider 
We not only learn, but we also learn to gradually change our conceptual framework and to adapt it to what we learn. 
Space is created by the interaction of individual quanta of gravity. 
Science begins with a vision". 
Without clues, we search in the wrong directions. Without evidence, a theory is not reliable. 
Is there not perhaps a contradiction between our feeling of freedom and the rigor, as we now understand it, with which things operate in the world? 
It is hardly surprising that there are more things in heaven and earth, dear reader, than have been dreamed of in our philosophy - or in our physics. 
we have realized that it is our immediate intuitions that are imprecise: 
What opens our minds and shows the limits of our ideas is an encounter with other people, other cultures, other ideas. 
The world of quantum mechanics is not a world of objects: it is a world of events. 
Genius hesitates. 
Time sits at the center of the tangle of problems raised by the intersection of gravity, quantum mechanics, and thermodynamics. 
It must not be claimed that anyone can sense time by itself apart from the movement of things. LUCRETIUS, De rerum natura1 
In quantum mechanics no object has a definite position, except when colliding headlong with something else. 
The world is complex, and we capture it with different languages, each appropriate to the process that we are describing. 
It is not against nature to be curious: it is our nature to be so. 
The very foundation of science is to keep the door open to doubt. 
Space is a spin network whose nodes represent its elementary grains, and whose links describe their proximity relations. Spacetime 
as Lucretius wrote: "our appetite for life is voracious, our thirst for life insatiable 
Science is about reading the world from a gradually widening point of view. 