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"If I take the theory as we have it now, literally, I would conclude that extra dimensions really exist. They're part of nature. We don't really know how big they are yet, but we hope to explore that in various ways."
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"The Peace of Wild ThingsWhen despair for the world grows in meand I wake in the night at the least soundin fear of what my life and my children's lives may be,I go and lie down where the wood drakerests in his beauty on the water, and the great heron feeds.I come into the peace of wild thingswho do not tax their lives with forethoughtof grief. I come into the presence of still water.And I feel above me the day-blind starswaiting with their light. For a timeI rest in the grace of the world, and am free."

"The last scud of day holds back for me, It flings my likeness after the rest and true as any on the shadow'd wilds, It coaxes me to the vapor and the dusk.I depart as air, I shake my white locks at the runaway sun, I effuse my flesh in eddies, and drift it in lacy jags.I bequeath myself to the dirt to grow from the grass I love, If you want me again look for me under your boot-soles.You will hardly know who I am or what I mean, But I shall be good health to your nevertheless,And filter and fibre your blood.Failing to fetch me at first keep encouraged,Missing me one place, search another,I stop somewhere waiting for you."

"Every mind should reflect to touch the green of life through trees."

"Then the immortal heart of the woods will beat against ours and its subtle life will steal into our veins and make us its own forever, so that no matter where we go or how widely we wander we shall yet be drawn back to the forest to find our most enduring kinship."
Explore more quotes by Edward Witten

"As far as extra dimensions are concerned, very tiny extra dimensions wouldn't be perceived in everyday life, just as atoms aren't: we see many atoms together but we don't see atoms individually."

"The theory has to be interpreted that extra dimensions beyond the ordinary four dimensions the three spatial dimensions plus time are sufficiently small that they haven't been observed yet."

"As for the forces, electromagnetism and gravity we experience in everyday life. But the weak and strong forces are beyond our ordinary experience. So in physics, lots of the basic building blocks take 20th- or perhaps 21st-century equipment to explore."

"In Einstein's general relativity the structure of space can change but not its topology. Topology is the property of something that doesn't change when you bend it or stretch it as long as you don't break anything."

"Having those extra dimensions and therefore many ways the string can vibrate in many different directions turns out to be the key to being able to describe all the particles that we see."

"String theory is an attempt at a deeper description of nature by thinking of an elementary particle not as a little point but as a little loop of vibrating string."

"One of the basic things about a string is that it can vibrate in many different shapes or forms, which gives music its beauty."

"Even before string theory, especially as physics developed in the 20th century, it turned out that the equations that really work in describing nature with the most generality and the greatest simplicity are very elegant and subtle."

"I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have new insights about the quantum states of black holes."

"It's indeed surprising that replacing the elementary particle with a string leads to such a big change in things. I'm tempted to say that it has to do with the fuzziness it introduces."
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