挑战让生活有趣，克服它们让生活有意义。
Challenges are what make life interesting. Overcoming them is what makes life meaningful.
The best writing leaves room for the reader to find their own meaning.
Sustainability is not just about planting trees; it's about ensuring that every action we take today doesn't compromise the future.
自律的痛苦比后悔的痛苦要好。