On skyscrapers from an interview primarily about the City Center Towers in Fort Worth, TX.
"I have been influenced by the fact that people perceive the first six stories (or 120 feet) of a high-rise building in a very different way from the rest of it. I came to that 120 feet because it has been shown (and I tested this myself) that most people can't recognize other people from more than 120 feet. So what happens higher than this matters only as seen from a great distance. Therefore, you can argue that above 120 feet, the high-rise tower can be scale less, but below this level, the building must achieve a human scale."
Interview with Mildred F. Schmertz, 1985