“He who learns but does not think, is lost! He who thinks but does not learn is in great danger.”
Confucius
Who was Confucius?
Confucius was a Chinese philosopher and politician of the Spring and Autumn period. The philosophy of Confucius, also known as Confucianism, emphasized personal and governmental morality, correctness of social relationships, justice, kindness, and sincerity.
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https://en.wikipedia.org/wiki/Confucius