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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.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
The more we understand individual things, the more we understand God.
Sustainability is not just a trend, it's our responsibility to the planet.
生活的最好方式是热爱你所做的事。
唯一真正的监狱是恐惧,唯一真正的自由是从恐惧中解脱。