I felt one of the worst pain sensations of my life during the 2006 Cannes Film Festival. I had a small bottle of eyedrops and a small bottle of intense cinnamon mouthwash in my jacket pocket, and in a moment of haste and distraction I grabbed the mouthwash bottle, leaned back and squeezed the liquid into my right eye. It felt like hydrochloric acid melting my eyeball and leaking into my brain. I couldn’t think, couldn’t see, couldn’t focus on how to find water to splash into my eye.