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"The basic theory in twistor theory is not to add extra dimensions."
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"I have a tendency to often share the point of view of the conspiracy theory."

"On the other hand, we don't understand the theory too completely, and because of this fuzziness of spacetime, the very concept of spacetime and spacetime dimensions isn't precisely defined."

"The theory of founder effects does not explain how novel features like plumage traits arise."

"My theory of hitting was just to watch the ball as it came in and hit it."

"Even for practical purposes theory generally turns out the most important thing in the end."

"Never abandon a theory that explains something until you have a theory that explains more."

"Of thousands of others, nearer the centre of the explosion, there was no trace. They vanished. The theory in Hiroshima is that the atomic heat was so great that they burned instantly to ashes - except that there were no ashes."
Explore more quotes by Roger Penrose


"So what I'm saying is why don't we think about changing Schrodinger's equation at some level when masses become too big at the level that you might have to worry about Einstein's general relativity."


"Some years ago, I wrote a book called the Emperor's New Mind and that book was describing a point of view I had about consciousness and why it was not something that comes about from complicated calculations."


"People think of these eureka moments and my feeling is that they tend to be little things, a little realisation and then a little realisation built on that."


"This book is about physics and its about physics and its relationship with mathematics and how they seem to be intimately related and to what extent can you explore this relationship and trust it."


"If you didn't have any conscious beings in the world, there really wouldn't be morality but with consciousness that you have it."


"Ordinary photons do have spin, they have a notion of helicity so they spin around their direction on motion."


"As you say, the way string theory requires all these extra dimensions and this comes from certain consistency requirements about how string should behave and so on."


"And these little things may not seem like much but after a while they take you off on a direction where you may be a long way off from what other people have been thinking about."


"My own way of thinking is to ponder long and I hope deeply on problems and for a long time which I keep away for years and years and I never really let them go."
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