自由不是选择黑白，而是放弃这种规定的选择。
Freedom would be not to choose between black and white but to abjure such prescribed choices.
The United States has no permanent enemies, no permanent friends, only permanent interests.
采矿技术的创新不仅仅是效率问题，还关乎安全和可持续性。
质量不是承诺；它是一种交付。
建筑师必须是一个问题解决者。