I believe you can try.

Henry's friend, John, made himself a pair of wings out of paper and thin bamboo sticks. It took John almost a week's time to make those wings, and he is very proud of himself and his handicraft. John spent the entire week talking to everyone about nothing but those pair of wings, and it is certain to everyone, including Henry, that John is obsessed. One reason is that it looks ridiculously flimsy. But then and again, since it's his friend's work, Henry forced himself to give compliments on it.

When the pair of wings is finally completed, Henry, dragged alongside John, went to a nearby hillside for a test fly. When they reached a cliff of a few meters tall John, beaming with ego and all, strode towards it with pride. Henry stood behind, watching like one of John's lackeys. This looks like trouble, Henry told himself in silence. Before long, John stood at a spot a couple of meters away from the edge of the cliff, with the stance similar to that of a runner right before the start of the race.

"Hey. You know what?" John said, gazing hard at the edge of the cliff.

"No I don't. What?" Henry replied, trying not to look at the imbecile figure right in front of him.

"I have been waiting for this moment since I was 4. This will definitely be the greatest achievement of my life. I will fly. I definitely will fly. I will set a new record for humanity. Me, John, flying. I will succeed. Do you know why?" John said.

"No."

"Because ..." John took a deep breath after saying, and started moving forward. " ... because I believe I can fly!"

Right before John finished his sentence, he reached the edge and leaped into the air. John's last word echoed, and for that split second, Henry thought that he saw John soaring into the air and embracing the sky like a child running towards his long lost mother for the first time in years. Henry wasn't sure why, but that is definitely the image that he saw. Maybe it is a sudden rush of adrenaline in his body, or maybe time has entered its parallel counterpart for a split second and got stuck. Henry wasn't sure it's which. The only thing Henry was certain, as he believed, was that what he was seeing cannot be true.

Whether it was for the good or for the bad, Henry was right in his disbelief. After what seemed like a second or two of flight, John's physical body could not fight the charisma and elegance of Mother Nature and her gravity. No matter how hard John flapped his arm, or rather his wings, John accelerated towards the hard and forbidding ground. John's echo turned into a high pitch shriek, one that made Henry thought, for the first and last time of his life, that John was a female. John was falling. 

All these ended at an instant, and John's one sided fight with the invincible Mother Nature is soon over. He landed with a thud and started to moan in pain. Henry went over to the edge as soon as he realized that John has landed and, from his moans, is still alive. Henry's eyes met with the blood stained John, who lost the ego, the pride that he was previously carrying with him into the air. John was utterly defeated. Henry sighed, and said the following.

"I don't believe you can fly, but ... I believe you can try."