Riddle: A man enters a jungle. There is a path through it. However, he had to figure out whether it was the right path or not. In a split second, he confirmed that it was not the right path. How was he so sure?
Answer: He looked carefully at the direction of the path and said it was the left path. Right really has two meanings!
Riddle: I am very important to all living creatures. I was firstborn in the sun. I am a chapter in textbooks and I am not made of fire. I make the sun-worthy. Too much of me may kill you. But humans can still prevent me. What am I?