学习是系统中产生的任何变化，这些变化或多或少会永久性地改变其适应环境的能力。
Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.
Time does not move in a straight line; it folds back on itself.
"We are the land, and the land is us."
作家是被激发模仿欲望的读者。
嫉妒是灵魂的肿瘤。
We don't inherit the earth from our ancestors; we borrow it from our children.