上午，研究人员将一组人置于日照下21分成钟，同一时间记录了他们的脑部运动。

The researchers exposed a group of people to 21 minutes of bright white light in the morning while they imaged their brains.

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结绳记数，撷枝绘形，从简单到丰富而简约，祖先在不经意间记录他们的经历，也留传了最初的符号。

Knotted ropes indicating numbers. Broken branches drawing sketches. From simple ways to rich and compact means, our ancestors casually recorded their life, and left behind the first symbols.

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尽管钢笔很小，但它改变了历史，促进了国家间的贸易，记录事件，传播新闻，比其他所有工具为人类做的工作都多。

Though it is small, the pen has changed the history, improved the trade of countries, recorded events, carried news, and done far more work for human beings than all other tools.

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His complex relationship with Socrates is Alcibiades by the way recounted in the drunken speech that Alcibiades gives in Plato's dialogue Symposium.

他与苏格拉底间,复杂的关系，都由酒醉的,娓娓道来，并记录在柏拉图的,《飨宴篇》辩证中。

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