Done Quote by Henry David Thoreau
“If you can speak what you will never hear, if you can write what you will never read, you have done rare things.”
“If you can speak what you will never hear, if you can write what you will never read, you have done rare things.”
![“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)
