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Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.
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。
Without food, man can live at most but a few weeks; without it, all other components of social justice are meaningless.
The true value of a forest cannot be measured in board feet alone.
我爱人类作为我的同胞;但他的权杖,无论是真实的还是篡夺的,除非个人的理性要求我致敬,否则不会延伸到我。
I don't believe in pessimism. If something doesn't come up the way you want, forge ahead. If you think it's going to rain, it will.
书籍是引导我们穿越人生的地图。