The only way to learn mathematics is to do mathematics.
Sustainability is not a trend; it's a responsibility we all share.
Nothing is more beautiful than the loveliness of the woods before sunrise.
精神是穿透生命本身的生命;它以燃烧在灵魂中的火焰为食。
The intoxication of anger, like that of the grape, shows us to others, but hides us from ourselves.
The key to success is to keep trying, even when things don't work out the first time.