拥有朋友的唯一方式就是成为别人的朋友。
"The only way to have a friend is to be one."
"Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."
林业技术应该服务于自然，而不是征服它。
人应该谦卑地面对自然。