The other day, I visited the dentist. She's my newfound favourite dentist because she not only does her job just by examining teeth and calls it a day, she would further explain and educate me on what she had done to my teeth and plus, she's really nice. But that day, it was a painful visit. The dentist hit a very sensitive part of my gum near the upper front teeth, and as natural as it was, tears started flowing down my cheeks that even the assistant had to wipe them off for me as the dentist was still cleaning my teeth. I told the dentist afterwards, "I'm so sorry I teared. I just... had to. It was so painful." I was still surprised at myself because I never had the intention to cry, it was something beyond my control. It was merely a physiological reaction. Just like how our eyes start to tear when we cut onions. I went home that night thinking so much about tears. I thought about the times when I cried. Why do we cry? Why was this reaction even created? It...