Related:

• Please do not look directly into laser with remaining eye.
• Laser printers do it without making an impression.
• Why don't you do it, then? Look me in the eye. Pull the trigger.
  End my life. -- 7th Doctor, THE HAPPINESS PATROL...
• It's not nice to fool Mother Nature, and it doesn't look too good, either.
  Have you seen Tammy Faye Bakker recently?...
• Don't LOOK at anything in a physics lab. Don't TASTE anything in a chemistry lab.
  Don't SMELL anything in a biology lab. Don't TOUCH anything in a medical lab....
• When one door closes another door opens; but we often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.
  -- Alexander Graham Bell...
• Pluto can be seen with the naked eye at Disneyland.
• How many quantum physicists -- does it take to change a light bulb?
  One. Two to do it, and one to renormalise the wave function....
• Why do scottish people refuse to buy refrigerators?
  They don't believe that the light will go out when you close the door....