There was a man who had four sons. He hoped his sons could learn not to judge things too quickly. 

So one day he gavehis four sons a task, asking each of them to go to see a pear tree at a distance in different seasons. 

The first son set out in winter, the second in spring, the third in summer, and the youngest son in autumn. 

When all of them returned home, the man called them together to describe what they had seen. 

The first son said the tree was ugly, bent, without leaves and therefore hopeless. 

The second son said it was not like that, but the tree was covered with green buds ( 芽 and full of hope. 

The third son disagreed, saying that it was full of flowers which smelled so sweet and looked so beautiful, and that hehad never seen such beautiful scenery. 

The last son disagreed with all of them, saying that the tree was filled with fruits, full of life and happiness. 

The man told his four sons that all of them were correct, because they only saw the tree in one season. He told themthat they could not judge a tree or a person only by one season, and that only when all the seasons were over could theyknow a tree or a person fully. 

We can learn more from this story. If we just give up in winter, we will miss the hope of spring, the beauty of summerand the harvest of autumn in our life. 

 The man wanted his sons not to____________