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• Cogito cogito ergo cogito sum -- I think that I think, therefore I think that I am.
  -- Ambrose Bierce...
• Cogito, ergo am, I think therefore I sum.
• I think that I think; therefore, I think I am. (Cogito cogito, ergo cogito ergo sum.
  ) -- Ambrose Bierce "The Devil's Dictionary...
• Cogito cogito ergo cogito sum -- "I think that I think, therefore I think that I am.
  -- Ambrose Bierce, "The Devil's Dictionary...
• I think, therefore I am. -- Rene Descarte
• CARTESIAN, adj. Relating to Descartes, a famous philosopher, author of the celebrated dictum, _Cogito ergo sum_ -- whereby he was pleased to suppose he demonstrated the reality of human existence.
  The dictum might be improved, however, thus: _Cogito cogito ergo cogito sum_ -- "I think that I think, therefore I think that I am...
• Cogito, Ergo Sum -- Descartes (1596-1650) -- "I think, therefore I am.
  >>>----- Variations on the Theme!...