Related:

• BEDEVERE: How do you know so much about swallows? ARTHUR
  Well you have to know these things when you're a king, you know....
• There are four kinds of people: those who sit quietly and do nothing, those who talk about sitting quietly and doing nothing, those who do things, and those who talk about doing things.
• I do know a few things about anatomy, Jean-Luc. -- Beverly
• A Thermos keeps hot things hot and cold things cold. How do it know? -- Bruce Willi
• I don't know about you, but my parents are always right.
• Homer: Well, Marge, it was horrible. Everyone was against me in that jury room.
  But I stood by the courage of my convictions and I prevailed....
• Those that know, do. Those that understand, teach. -- Aristotle
• Those who know, do not say; those who say, do not know.
• Do you know how many of those pills it takes to prevent a super baby? Lois Lane