2012.3.9 每日当三省吾身（三合一版） produced

白天羽

Histories make men wise; poems witty; the mathematics subtle; natural philosophy deep; moral grave; logic and rhetoric able to contend.

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Human felicity is produced not so much by great pieces of good fortune that seldom happen, as by little advantages that occur every day

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The secret of being miserable is to have leisure to bother about whether you are happy or not.

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amazon496

历史使人睿智；诗使人机智；数学使人敏锐；自然哲学使人深奥；品行使人严肃；逻辑学和修辞学使人竞争。
人类的幸福并非来自极少遇到的好运气，而是每天的微小机遇。
变悲伤的秘密就是有空对自己是否快乐而担忧。

jane019

历史使人睿智，诗歌使人聪慧，算术使人精细，哲学使人深刻，伦理使人庄重，逻辑和修辞使人善辩。
应该是出自培根的《论读书》。