Possible Clues:

• Re Plato's teachers
• Relating to a Greek philosopher, d. 399 BC
• Sort of philosophy actor gets involved in thus
• Reviews Channel Island actors playing in A Philosophical Method
• Relating to Plato's teacher
• A philosophical method producing Channel Islands' salt associated with Greek Island going all the way back
• __ method, a form of dialogue which encourages critical thinking
• Such questioning thus by commander having arrested deserter