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十五
子曰、學而不
思則罔、思而
不學則殆。
十六
子曰、攻乎異
端、斯害也己。
十七
子曰、由、誨女
知之乎、知之
CHAPTER XV.
The Master said: "Learning without thought is useless. Thought without learning is dangerous."
CHAPTER XVI.
The Master said: "To devote oneself to irregular speculations is decidedly harmful."
CHAPTER XVII.
The Master said: "Yu! Shall I teach you the meaning of
