by
Robert M Pirsig
| Publisher: Harper Perennial

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Zen and the Art of Motorcycle Maintenance

Wrote 7/4/14

insondabile

Diamine! è stato come scalare una montagna, leggere questo libro. sicuramente ci sono cose interessanti, c'è il viaggio come riscoperta interiore, ma un viaggio senza sosta, senza guardare i posti dove si passa, senza soffermarsi su nulla, senza capi

Diamine! è stato come scalare una montagna, leggere questo libro. sicuramente ci sono cose interessanti, c'è il viaggio come riscoperta interiore, ma un viaggio senza sosta, senza guardare i posti dove si passa, senza soffermarsi su nulla, senza capire il perchè si fa questo viaggio col proprio figlio; quasi una tortura per un ragazzo che neanche lui capisce il perchè di questo viaggio. di motociclette si parla poco o niente, forse è una scusa, forse è secondo me, una specie di cura interiore per rimettere a posto il proprio io, dopo elucubrazioni filososfiche che hanno fatto sdoppiare il protagonista, e facendolo finire in manicomio.

...ContinuaZen and the Art of Motorcycle Maintenance

Wrote 12/7/13

Interesting. Sometimes a bit difficult to follow.

Zen and the Art of Motorcycle Maintenance

Wrote 7/22/12

Superb

I've been reading lots of reviews of this book, before, while and after reading it myself. And whereas most of them seem to have read a boring and dense nonsensical stuff, I have another story to tell.
Recommended by a friend of mine who likes to re

I've been reading lots of reviews of this book, before, while and after reading it myself. And whereas most of them seem to have read a boring and dense nonsensical stuff, I have another story to tell.

Recommended by a friend of mine who likes to read stuff that's not precisely light, I found the book and started reading with no expectations (or at least no further than 'it's damned good'), as I'm sure it's the intention of the title.

I can only say that I couldn't put it down. And that it is, indeed, no light stuff. It IS dense. Sometimes slow and sometimes too descriptive for my taste. But it had been a while since I read something that successfully combined actual facts and a lot of rambling and ranting (chautauquas, according to Pirsig) with a story that is as enthralling as completely unexpected.

It's not quite about zen. It's not quite about motorcycle maintenance. It has quite a bit of both, though.

Go read it. Seriously, read it. Especially read it when you have time to think about what you're reading.

...ContinuaZen and the Art of Motorcycle Maintenance

Wrote 12/25/11

I read it because it is a famous book and I was curious. In parts it's boring in others it flows very well. A mixed balance I guess, overall not bad but I wouldn't read it again

Zen and the Art of Motorcycle Maintenance

Wrote 12/17/11

This is also one of my all time favorites.

Wrote Jun 25, 2007, 01:59

Euclid's horizon straight line.

Pag. 378

Wrote Jun 25, 2007, 01:58

Mythos-over-logos argument.

Pag. 349

Wrote Jun 25, 2007, 01:58

Japanese "mu" -- neither yes nor no.

Pag. 320

Wrote Jun 25, 2007, 01:58

The trap consists of a hollowed-out coconut chained to a stake. The coconut has some rice inside which can be grabbed through a small hole. The hole is big enough so that the monkey's hand can go in, but too small for his fist with rice in it to comeThe trap consists of a hollowed-out coconut chained to a stake. The coconut has some rice inside which can be grabbed through a small hole. The hole is big enough so that the monkey's hand can go in, but too small for his fist with rice in it to come out. The monkey reaches in and is suddenly trapped...by nothing more than his own value rigidity. He can't revalue the rice. He cannot see that freedom without rice is more valuable than capture with it....Continua

Pag. 312

Wrote Jun 25, 2007, 01:58

In his Foundations of Science Poincaré explained that the antecedents of the crisis in the foundations of science were very old. It had long been sought in vain, he said, to demonstrate the axiom known as Euclid's fifth postulate and this search wasIn his Foundations of Science Poincaré explained that the antecedents of the crisis in the foundations of science were very old. It had long been sought in vain, he said, to demonstrate the axiom known as Euclid's fifth postulate and this search was the start of the crisis. Euclid's postulate of parallels, which states that through a given point there's not more than one parallel line to a given straight line, we usually learn in tenth-grade geometry. It is one of the basic building blocks out of which the entire mathematics of geometry is constructed.

All the other axioms seemed so obvious as to be unquestionable, but this one did not. Yet you couldn't get rid of it without destroying huge portions of the mathematics, and no one seemed able to reduce it to anything more elementary. What vast effort had been wasted in that chimeric hope was truly unimaginable, Poincaré said.

Finally, in the first quarter of the nineteenth century, and almost at the same time, a Hungarian and a Russian...Bolyai and Lobachevski...established irrefutably that a proof of Euclid's fifth postulate is impossible. They did this by reasoning that if there were any way to reduce Euclid's postulate to other, surer axioms, another effect would also be noticeable: a reversal of Euclid's postulate would create logical contradictions in the geometry. So they reversed Euclid's postulate.

Lobachevski assumes at the start that through a given point can be drawn two parallels to a given straight. And he retains besides all Euclid's other

axioms. From these hypotheses he deduces a series of theorems among which it's impossible to find any contradiction, and he constructs a geometry

whose faultless logic is inferior in nothing to that of the Euclidian geometry.

Thus by his failure to find any contradictions he proves that the fifth postulate is irreducible to simpler axioms. It wasn't the proof that was alarming. It was its rational byproduct that soon

overshadowed it and almost everything else in the field of mathematics.

Mathematics, the cornerstone of scientific certainty, was suddenly uncertain. We now had two contradictory visions of unshakable scientific truth, true for all men of all ages, regardless of their individual preferences.

This was the basis of the profound crisis that shattered the scientific complacency of the Gilded Age. How do we know which one of these geometries is right? If there is no basis for distinguishing between them, then you have a total mathematics which admits logical contradictions. But a mathematics that admits internal logical contradictions is no mathematics at all. The ultimate effect of the non-Euclidian geometries becomes nothing more than a magician's mumbo jumbo in which belief is sustained purely by faith!

And of course once that door was opened one could hardly expect the number of contradictory systems of unshakable scientific truth to be limited

to two. A German named Riemann appeared with another unshakable system of geometry which throws overboard not only Euclid's postulate, but

also the first axiom, which states that only one straight line can pass through two points. Again there is no internal contradiction, only an inconsistency with both Lobachevskian and Euclidian geometries.

According to the Theory of Relativity, Riemann geometry best describes the world we live in....Continua

Pag. 261

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