“In all the useful arts the world is either standing still or going backwards.”

“Have you noticed," she asked him, "how standing still can sometimes be no different from moving backward? For the whole world moves on and leaves one behind.”

“Nothing stands still. Things are either... ”

“Things can go three ways—left, right, or straight. If you stand on one side, either the left or the right, you will have the quickest reaction 1/3rd of the time, the second quickest reaction 1/3rd of the time, and the slowest reaction 1/3rd of the time. But if you stand in the middle, you’ll have the quickest reaction 1/3rd of the time, and you’ll have the second quickest reaction time 2/3rds of the time. I guess things can also go backwards, but the middle is still the best place to stand.”

“The world could be standing still, and we'd all be just as dizzy.”

“We cannot go backward,' Marco says. 'A great deal is not how it used to be.”