This is a story about two lemons.

Both of the lemons grew from the same lemon tree. They ripened at the same time and fell from the tree on the same day.

On this day, a person passes the lemon tree and decides to taste one of the yellow fruits. They expect to enjoy a sweetness, similar to the fruit they had eaten from other trees. But after biting into the bitter lemon, they throw it to the ground in disgust, then drink water to get the taste out of their mouth.

Later that day, another person passes the same lemon tree. They also decide to taste one of the unfamiliar yellow fruits, which they also anticipate will be sweet. They bite into the lemon and are surprised by the bitter taste. They drink water, and notice that it balances the bitter taste of the lemon. But, before throwing the lemon to the ground, they pause, thinking that it would be a waste for good fruit to rot. Then it strikes them, why not add the lemon into the water?

One of these people became the proud creator of lemonade, the other person, will only know a good thing as bitter.