Several short thoughts:

     A wise man cares not for what he cannot have.
          -- Italian Proverb

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     Until you make peace with who you are, you'll never
     be content with what you have.
          -- Doris Mortman

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The ultimate measure of a man is not where he stands
     in moments of comfort and convenience, but where he
     stands at times of challenge and controversy.
          -- Martin Luther King, Jr.

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Forwarded by Dan and Margaret Cramer: