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There is something missing in our understanding of space.

— Joseph Polchinski

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More quotes by Joseph Polchinski

You're not supposed to have equations in a public lecture, so think of this as a piece of art.

In the open string the gauge charges are carried by the Chan-Paton degrees of freedom at the endpoints. In the closed string the charges are carried by fields that move along the string.

Maxwell got a huge bonus for understanding the unification of electricity and magnetism. He understood the nature of light! When I first heard about this in high school I thought this was the coolest thing, and I still do. It's what we're all trying to do.

In all there are four arguments here for the multiverse: the failure of conventional methods for understanding why the cosmological constant is not large, the success of the environmental theories for doing so, the successful prediction of the nonzero cosmological constant, and the string landscape.

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Since, in the long run, every planetary society will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring — not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive.

Carl Sagan Pale Blue Dot: A Vision of the Human Future in Space (1994)

The stars awaken a certain reverence, because though always present, they are inaccessible; but all natural objects make a kindred impression, when the mind is open to their influence. Nature never wears a mean appearance.

Ralph Waldo Emerson Nature (1836)

Her blue eyes sought the west afar,
For lovers love the western star.

Walter Scott The Lay of the Last Minstrel (1805)

Einstein's space is no closer to reality than Van Gogh's sky.

Arthur Koestler The Act of Creation (1964)

Attribution

Quote text and notes from Wikiquote: Joseph Polchinski (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.