McAllister: You take a big risk by encouraging them to be artists John. When they realize they're not Rembrandts, Shakespeares or Mozarts, they'll hate you for it.
Keating: We're not talking artists George, we're talking free thinkers.
McAllister: Free thinkers at seventeen?
Keating: Funny, I never pegged you as a cynic.
McAllister: Not a cynic, a realist. Show me the heart unfettered by foolish dreams, and I'll show you a happy man.
Keating: But only in their dreams can man be truly free. 'Twas always thus, and always thus will be.
McAllister: Tennyson?
Keating: No, Keating.
  
  
  
  
  
   
  
  
Keating: We're not talking artists George, we're talking free thinkers.
McAllister: Free thinkers at seventeen?
Keating: Funny, I never pegged you as a cynic.
McAllister: Not a cynic, a realist. Show me the heart unfettered by foolish dreams, and I'll show you a happy man.
Keating: But only in their dreams can man be truly free. 'Twas always thus, and always thus will be.
McAllister: Tennyson?
Keating: No, Keating.
 McAllister : You take a big risk by encouraging them to be artists John. When they realize they're not Rembrandts, Shakespeares or Mozarts, they'll hate you for it. 
 Keating : We're not talking artists George, we're talking free thinkers. 
 McAllister : Free thinkers at seventeen? 
 Keating : Funny, I never pegged you as a cynic. 
 McAllister : Not a cynic, a realist. Show me the heart unfettered by foolish dreams, and I'll show you a happy man. 
 Keating : But only in their dreams can man be truly free. 'Twas always thus, and always thus will be. 
 McAllister : Tennyson? 
 Keating : No, Keating. 
http://www.moviequotedb.com/movies/dead-poets-society/quote_6333.html