Related:

• The angry man always thinks he can do more than he can. -- Albertano of Brescia
• Unless a man undertakes more than he possibly can do, he will never doall he can do.
  -- Henry Drummond...
• None of our men are "experts." We have most unfortunately found it necessary to get rid of a man as soon as he thinks himself an expert -- because no one ever considers himself expert if he really knows his job.
  A man who knows a job sees so much more to be done than he has done, that he is always pressing forward and never gives up an instant of thought to how good and how efficient he is....
• None of our men are "experts." We have most unfortunately found it necessary to get rid of a man as soon as he thinks himself an expert -- because no one ever considers himself expert if he really knows his job.
  A man who knows a job sees so much more to be done than he has done, that he is always pressing forward and never gives up an instant of thought to how good and how efficient he is....
• A man bites off more trouble than he can chew when he doesn't do what his wife wants.
  You better believe it. -- Satchel Paige...
• He that never thinks can never be wise. JOHNSON
• A censor is a man who knows more than he thinks you ought to. -- Granville Hicks (1901-1982)
• A man must not swallow more beliefs than he can digest. -- Havelock Elli