"Who learns without thinking,

fall into misleading

Who thinks, not wanting to learn,

 get into trouble"

"Give advice only one who looks for knowledge,

having discovered his own ignorance.

Help only one

who can't express his cherished thoughts.

Teach only those who can guess three other

corners of the square,

knowing only one"

Chiu Kun-tzu (Confucius)

V-VI century BC

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