An Optimist Is A Person Who Sees A Green Light Everywhere, While A Pessimist Sees Only The Red Stoplight.

Related:

• Twixt the optimist and pessimist The difference is droll
  The optimist sees the doughnut But the pessimist sees the hole....
• A pessimist sees the difficulty in every opportunity
  an optimist sees the opportunity in every difficulty. -- Sir Winston Churchill (1874-1965)...
• The optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious to the rose.
  Kahlil Gibra...
• An optimist is a person who goes to the window every morning and says, "Good morning, God!
  The pessimist goes to the window every morning and says, "Good god, morning!...
• 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, Maxim...
• 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 what YOU are doing, not the other person....
• Neither an Optimist nor a Pessimist-- Only a Realist.
• One who lives in a wine cellar rarely sees the light of day.