Possible Clues:

• Special skill concerning French thinker
• Philosopher right to stop one abandoning use of irony
• Philosopher in wrongful arrest
• Skill seen in odd pieces from screen writer
• Famous Frenchman wanting some of his art recognised
• Sooner
• See 6
• Existentialist who declined a Nobel Prize
• Arrest criminal John-Paul!
• Who wrote 'I exist, that is all, and I find it nauseating'