Do not answer the person whose questions are vile. Do not question a person whose answers are vile.
ConfuciusWhen the Superior Man eats he does not try to stuff himself; at rest he does not seek perfect comfort; he is diligent in his work and careful in speech. He avails himself to people of the Tao and thereby corrects himself. This is the kind of person of whom you can say, "he loves learning."
Confucius