“In seeming contradiction of physical laws, time is heavy only when it is empty.”

“The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more.”

“In the beginning, there was physics. "Physics" describes how matter, energy, space, and time behave and interact with one another. The interplay of these characters in our cosmic drama underlies all biological and chemical phenomena. Hence everything fundamental and familiar to us earthlings begins with, and rests upon, the laws of physics. When we apply these laws to astronomical settings, we deal with physics writ large, which we call astrophysics.”

“All those stories about time travel, they were comforting, and at the same time it bothered me how they always made it seem fun and how everything fit into place, how things could only ever be how they were supposed to be, how the heroes found a way to change the world while still obeying the laws of physics.”

“In mari's view this difficulty was due not to chaos or disorganization or anarchy , but to an excess of order. Society had more & more rules , and laws that contradicted the rules , and new rules that contradicted the laws.”

“When you encounter seemingly good advice that contradicts other seemingly good advice, ignore them both.”