The more privileged we are, the more spoiled we are, and the less tolerant we become. I thought I was tolerant until I recently walked past a rubbish collection point with a friend. The first thing I did was cover my nose and hold my breath. I was so annoyed by the smell that I said to my friend: 'It's really smelly! Let's walk faster.' Ironically, there was a middle-aged worker eating her dinner in the shelter which was full of rubbish and flies. I felt so bad. I could never stay at a rubbish collection point, not to mention eating there. You would probably have reacted the same way I did. It's only natural. But do you realise that there are people who do not have any choice but to tolerate the undesirable circumstances they face? The cleaner is one them. One of my students pretended he was not feeling well and went home on sports day. He also sneaked out one time when he had a computer exam. If he thought skipping sports day made him look cool, he was wrong. He looked like a coward. He said he was tired and very sick and had to go home right away. His behaviour was a sign of disrespect for the rules and commands that everyone from the school had to follow. If more than 1,000 students could tolerate it, why couldn't he? If he continues to be imptaient and intolerant, it's unlikely he will achieve his dream of becoming a lawyer. Besides tolerance and patience, endurance is the most important factors in success. Endurance is our ability to tolerate hardships. Without endurance, we will not get anywhere. Our academic results not only reflect how well we can master knowledge, but also our endurance in mastering knowledge. We should all learn to be tolerant. Remember that tolerance is the key to success.