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He who can, does. He who cannot, teaches.
He who can, does. He who cannot, teaches.
 O ye! who teach the ingenious youth of nations,
 Holland, France, England, Germany or Spain,
  I pray read more 
 O ye! who teach the ingenious youth of nations,
 Holland, France, England, Germany or Spain,
  I pray ye flog them upon all occasions,
   It mends their morals, never mind the pain. 
Everybody who is incapable of learning has taken to teaching.
Everybody who is incapable of learning has taken to teaching.
The sounding jargon of the schools.
The sounding jargon of the schools.
Sometimes questions are more important than answers.
Sometimes questions are more important than answers.
 We must not contradict, but instruct him that contradicts us; for 
a madman is not cured by another running read more 
 We must not contradict, but instruct him that contradicts us; for 
a madman is not cured by another running mad also. 
The first duty of a lecturer--to hand you after an hour's discourse a nugget of pure truth to wrap up read more
The first duty of a lecturer--to hand you after an hour's discourse a nugget of pure truth to wrap up between the pages of your notebooks and keep on the mantlepiece forever.
Never try to teach a pig to sing; it wastes your time and it annoys the pig.
Never try to teach a pig to sing; it wastes your time and it annoys the pig.
To be good is noble, but to teach others how to be good is nobler--and less trouble.
To be good is noble, but to teach others how to be good is nobler--and less trouble.