Once upon a time in a land far away, there was a wonderful old man who loved all kinds of small animals, such as spiders, insects and butterflies and so on.
One day while walking through the woods, the nice old man found a cocoon（茧） of a butterfly. He took it home.
A few days later, a small opening appeared. He sat and watched the butterfly for several hours as it struggled to make its body out of that little hole. Then it seemed to stop making any progress. It appeared it could go no farther.
Then the man decided to help the butterfly, so he took a pair of scissors and snipped off the remaining bit of the cocoon. The butterfly then got out of the cocoon easily.
But it had a swollen（肿胀的） body and small shriveled（枯萎的） wings. The man continued to watch the butterfly because he expected that, at any moment, the wings would enlarge to be able to support the body, which would contract（收缩） in time. Neither happened! In fact, the butterfly spent the rest of its life crawling around with a swollen body and shriveled wings.
What the warm-hearted man in his kindness did not understand was that the restricting cocoon and the struggle required for the butterfly to get through the tiny opening were Nature's way of forcing fluid（体液） from the body of the butterfly into its wings, so that it would be ready for flight once it achieved its freedom from the cocoon.
Sometimes struggles are exactly what we need in our life. If we were allowed to go through our life without any difficulties, it would be bad for us. We would not be as strong as what we could have been. And we could never fly.
