An economist's definition of hatred is the willingness to pay a price to inflict harm on others.

Knowledge is more important than space.

Great cities are not static, they constantly change and take the world along with them.

One classic paper compared the effects of right-to-work laws on factory jobs in neighboring counties, on either side of a right-to-work border. It found that manufacturing grew 23.1% faster between 1947 and 1992 on the anti-union side of the divide.

The strength that comes from human collaboration is the central truth behind civilisation's success and the primary reason why cities existwe must free ourselves from our tendency to see cities as their buildings, and remember that the real city is made of flesh, not concrete.