An optimist is a person who sees a green light everywhere,

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• Twixt the optimist and pessimist The difference is droll:
  The optimist sees the doughnut But the pessimist sees...
• A pessimist sees the difficulty in every opportunity;
  an optimist sees the opportunity in every difficulty...
• The optimist sees the rose and not its thorns; the pessimist stares at the thorns,
  oblivious to the rose. Kahlil...
• An optimist is a person who goes to the window every morning and says,
  "Good morning, God!" The pessimist goes to the window...
• A truly wise person knows that he
  knows not...
• Only through art can we emerge from ourselves and know what another person sees.
  Marcel Proust,...
• The person who stands in New York and sees the fly in California is unconscious of the fact that at the very time,
  a horse is standing on his foot. Pay attention to...
• Neither an Optimist nor a Pessimist--
  Only a Realist...
• One who lives in a wine cellar rarely sees the light
  of day...