Philosophical skepticism ( Greek Ï Î Î Ï Î Ï - skepsis meaning `` enquiry '' ) is a school of philosophical thought that began in Ancient Greece and a method that crosses many different cultures . Philosophical skepticism ( from Greek Ï Î Î Ï Î Ï - skepsis meaning `` enquiry '' - UK spelling , scepticism ) is both a philosophical school of thought and a method that crosses disciplines and cultures .