“While many Greeks (although not Thucydides) thought that history moved in circles, repeating itself infinitely, the Jewish idea that each event was singular and proceeded along a straight line had a great impact on European thinking.”

“The world does not move through time as if it were a straight line, proceeding from the past to the future. Instead time moves through and within us, in endless spirals. Eternity does not mean infinite time, but simply timelessness.”

“History repeats itself. Historians repeat each other."[1880]”

“It was funny, Grey thought. Not funny ha-ha, but funny strange, the whole idea of time. He'd thought it was one thing but it was actually another. It wasn't a line but a circle, and even more; it was a circle made of circles made of circles, each lying on top of the other, so that every moment was next to every other moment, all at once. And once you knew this you couldn't unknow it. Such as now the way he could see events as they were about to unfold, as if they'd already happened, because in a way they had.”

“When a man in a forest thinks he is going forward in a straight line, in reality he is going in a circle, I did my best to go in a circle, hoping to go in a straight line.”

“Each time history repeats itself, the price goes up.”