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黑暗无法驱走黑暗,只有光可以;仇恨无法消除仇恨,只有爱能做到。
The revolution is not an apple that falls when it is ripe. You have to make it fall.
Technology can be forestry's greatest ally if we use it wisely.
Psychology is a science, and teaching is an art; and sciences never generate arts directly out of themselves.
If we don’t act now, the next generation will inherit a world with fewer resources and greater challenges.