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The best picture books work on different levels for different ages.

The method of psychology must be rigorously empirical.

The success of an enterprise depends on teamwork; the strength of an individual is limited.

When you read,don't just consider what the author thinks,consider what you think.

Science is the art of making the complex understandable.

在我們視野所及中，人類存在的唯一目的，是在純粹存在的黑暗中燃起一點(diǎn)光亮。