Possible Clues:

• First Cartesian
• ''In the Line of Fire'' actress Russo
• Russo of ''Ransom''
• Descartes or Russo
• Russo of ''The Thomas Crown Affair''
• Russo or Descartes
• Descartes or Coty
• "Ransom" actress Russo
• Russo of ''In the Line of Fire''
• Magritte or Descartes