John D. Barrow: Trending quotes (page 2)

“This may be the low-impact evolutionary path you need to follow in order to survive into the far, far future.”

John D. Barrow

The Book of Universes: Exploring the Limits of the Cosmos (2011)
Context: Continual miniaturisation allows resources to be conserved, efficiency to be increased, pollution to be reduced, and the remarkable flexibilities of the quantum world to be tapped. Very advanced civilizations elsewhere in the universe may have been force to follow the same technological path. Their nano-scale space probes, their atomic-scale machines and nano-computers, would be imperceptible to our course-grained surveys of the universe.... This may be the low-impact evolutionary path you need to follow in order to survive into the far, far future.<!--ch. 2, pp. 23-24

Future

“Just focusing on what exists now seems a bit exclusive.”

John D. Barrow

The Book of Universes: Exploring the Limits of the Cosmos (2011)
Context: Just focusing on what exists now seems a bit exclusive. And if we include everything that has ever existed as part of the universe, why not include the future as well? This seems to leave us with the definition that the universe is everything that has ever existed, does exist, or will ever exist.<!--ch. 1, p. 3

“There was always something left: a vacuum energy that permeated every fibre of the Universe.”

John D. Barrow

Source: The Book of Nothing (2009), chapter nought "Nothingology—Flying to Nowhere"
Context: The quantum revolution showed us why the old picture of a vacuum as an empty box was untenable.... Gradually, this exotic new picture of quantum nothingness succumbed to experimental exploration... in the form of vacuum tubes, light bulbs and X-rays. Now the 'empty' space itself started to be probed.... There was always something left: a vacuum energy that permeated every fibre of the Universe.

Universe

“The Indian system of counting is probably the most successful intellectual innovation ever devised by human beings. It has been universally adopted. …It is the nearest thing we have to a universal language.”

John D. Barrow

Source: The Book of Nothing (2009), chapter one "Zero—The Whole Story"

Universe , Success

“There could not be a non-mathematical Universe containing living observers.”

John D. Barrow

The Artful Universe (1995)
Context: Where there is life there is a pattern, and where there is a pattern there is mathematics. Once that germ of rationality and order exists to turn a chaos into a cosmos, then so does mathematics. There could not be a non-mathematical Universe containing living observers.<!-- Ch. 5, p. 230

Mathematics , Universe

“There is a good deal more to Pythagorean musical theory than celestial harmony.”

John D. Barrow

The Artful Universe (1995)
Context: Ancient belief in a cosmos composed of spheres, producing music as angels guided them through the heavens, was still fluorishing in Elizabethan times.... There is a good deal more to Pythagorean musical theory than celestial harmony. Besides the music of the celestial spheres (musica mundana), two other varieties of music were distinguished: the sound of instruments...(musica instrumentalis), and the continuous unheard music that emanated from the human body (musica humana), which arises from a resonance between the body and the soul.... In the medieval world, the status of music is revealed by its position within the Quadrivium—the fourfold curriculum—alongside arithmetic, geometry, and astronomy. Medieval students... believed all forms of harmony to derive from a common source. Before Boethius' studies in the ninth century, the idea of musical harmony was not considered independently of wider matters of celestial or ethical harmony.<!-- Ch. 5, pp. 201-202

Music

“Ultimate explanation no longer means only a story that encompasses everything.”

John D. Barrow

New Theories of Everything (2007), Ch. 1, p. 6

“The abstractions of Einstein's curved space and time gave rise to analogies and pictures that played a new explanatory role.”

John D. Barrow

Cosmic Imagery: Key Images in the History of Science (2008)
Context: The abstractions of Einstein's curved space and time gave rise to analogies and pictures that played a new explanatory role. Space and time gave way to space-time, visible light was augmented by images across the rest of the electromagnetic spectrum, and we realised that we could see back towards the apparent beginnings of time.<!--part. 1, p. 8

Time

“If a 'religion' is defined to be a system of ideas that contains unprovable statements, then Gödel taught us that mathematics is not only a religion, it is the only religion that can prove itself to be one.”

John D. Barrow

The Artful Universe (1995)
Context: If a 'religion' is defined to be a system of ideas that contains unprovable statements, then Gödel taught us that mathematics is not only a religion, it is the only religion that can prove itself to be one.<!-- Ch. 5, p. 211

Religion , Mathematics , Idea

“Unfortunately, truth is neither a listable nor a decidable property; nor is the truth of a statement of arithmetic. The American logician John Myhill has used the term 'prospective' to characterize those attributes of the world that are neither listable nor decidable. They are properties that cannot be recognized by the application of some formula, made to conform to a rule, or generated by some computer program. They are characterized by incessant novelty that cannot be encompassed by any finite set of rules. 'Beauty', 'ugliness', 'truth', 'harmony', simplicity', and 'poetry' are names we give to some of the attributes of this sort. There is no way of listing all examples of beauty or ugliness, nor any procedure for saying whether or not something possesses either of those attributes, without redefining them in some more restrictive fashion that kills their prospective character.”

John D. Barrow

Source: The Artful Universe (1995), Ch. 5, pp. 219-220

Truth , World , Beauty , Way

“The physicist's concept of nothing—the vacuum… began as empty space—the void… turned into a stagnant ether through which all the motions of the Universe swam, vanished in Einstein's hands, then re-emerged in the twentieth-century quantum picture of how Nature works.”

John D. Barrow

Source: The Book of Nothing (2009), chapter nought "Nothingology—Flying to Nowhere"

Nature , Universe

“Each of the most basic physical laws that we know corresponds to some invariance, which in turn is equivalent to a collection of changes which form a symmetry group. …whilst leaving some underlying theme unchanged. …for example, the conservation of energy is equivalent to the invariance of the laws of motion with respect to translations backwards or forwards in time… the conservation of linear momentum is equivalent to the invariance of the laws of motion with respect to the position of your laboratory in space, and the conservation of angular momentum to an invariance with respect to directional orientation… discovery of conservation laws indicated that Nature possessed built-in sustaining principles which prevented the world from just ceasing to be. There were fewer roles for the Deity to play…”

John D. Barrow

New Theories of Everything (2007)