Body Quote by Johannes Kepler
“If two stones were placed... near each other, and beyond the sphere of influence of a third cognate body, these stones, like two magnetic needles, would come together in the intermediate point, each approaching the other by a space proportional to the comparative mass of the other.”
![“[Quantity is the fundamental feature of things,] the 'primarium accidens substantiae,' ...prior to the other categories.” quote by Johannes Kepler](https://sms4smile.com/quotes/img-quotes/4a1/johannes-kepler-4278_categories_quantity-is-the-fundamental-feature-of-t_150994.jpg)
![“I've used the Phoenix Centrifuge to replicate what the body's going to go through on the flight up. I've also done some gravity tests with ZERO-G [a charter-flight service in Arlington, Va., that uses modified Boeing 727s to simulate weightlessness], which went great.” quote by Richard Branson](https://sms4smile.com/quotes/img-quotes/aa1/richard-branson-256_adventure_i-ve-used-the-phoenix-centrifuge-to-repl_903.jpg)
