“ In every community, there is work to be done. In every nation, there are wounds to heal. In every heart, there is the power to do it. ” ― Marianne Williamson
The Feynman Lectures on Gravitation are based on notes prepared during a course on gravitational physics that Richard Feynman taught at Caltech during the 1962-63 academic year. For several years prior to these lectures, Feynman thought long and hard abou