Related:

• How many theoretical physicists -- does it take to change a light bulb?
  If you know how many, you can't know if they've done it yet....
• Psychologists think they're experimental psychologists.
  Experimental psychologists think they're biologists....
• How many theoretical physicists -- does it take to change a light bulb?
  If you want to know how many, you can observe them as they come in the door....
• How many theoretical physicists -- does it take to change a light bulb?
  The probability that the light bulb will actually be changed in any time interval is independent of how long you've been waiting....
• Our crude civilization engenders a multitude of wants, and law-givers are ever at their wit's end devising.
  The hall and the theater and the church have been invented, and compulsory education....
• Pure science is a myth: Both mathematical theoreticians like Albert Einstein and practical crackpots like Henry Ford dealt with different aspects of the same world.
  -- Edward Abbey...
• It is a faith (not always justified) of theoretical physics that if man proposes what is sufficiently elegant, nature, pleased and flattered, will say yes.
  -- Leon N. Cooper, Introduction To The Meaning & Structure Of Physic...
• Neutrinos are into physicists.