Sustainability is not an option; it's a necessity for long-term success.
The best designs are those that solve problems without creating new ones.
身体单薄无力，就不要去背负重物，说话没有分量，就不要去规劝别人；没有钱就不要到人群中去，遭遇困难之际千万别去寻求亲戚的帮助。
质量不是一种行为，而是一种习惯。