"If you want something done well, do it yourself,"

"One is loved because one is loved. No reason is needed for loving."

"life is never simple paths—only dizzying labyrinths folding in on themselves."

"I suppose you are reading this in my future. Maybe you are reading in a future so distant from my present that “this” is over."

"So far, at a paltry 250,000 years, it’s hard to give humanity’s temporal range more than one star."

"And so in hope, and in expectation, I give our temporal range four stars."

"When asked to work out the acreage of land in every English county, Halley “took a large map of England, and cut out the largest complete circle he could from the map.” That circle equated to 69.33 miles in diameter. He then weighed both the circle and the complete map, concluding that since the map weighed four times more than the circle, the area of England was four times the area of the circle. His result was only 1 percent off from contemporary calculations."

"partly based on Newton’s incorrect calculations of the moon’s density, Halley argued there was a second Earth inside of our Earth, with its own atmosphere and possibly its own inhabitants."

"Anxiety doesn’t ever go away. There’s not suddenly a sun-lit plateau where you’re never anxious about anything – it just takes different shapes and forms."

"their sadness when separated from friends and loved ones helped them preserve crucial social ties;"