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【原文】季文子三思而后行。子聞之曰：“再，斯可矣。”【譯文】季文子遇事總要思考三次，然后才行動(dòng)。孔子聽(tīng)說(shuō)后，說(shuō)：“思考兩次就可以了。”

The language of mathematics is universal; it transcends all cultural barriers.

Play is the language of childhood, and books should speak that language too.

All language is but a poor translation.

To be creative means to be in love with life. You can be creative only if you love life enough that you want to enhance its beauty.