The future of construction lies in materials that are both durable and environmentally friendly.

颜渊问仁。孔子说：“用坚强的意志、顽强的拼搏精神，主持正义、捍卫道德、维护和平，这就是仁。一旦做到了这一点，普天下的人都会崇敬你、追随你、向你学习。为崇高理想而奋斗要靠的是自己，难道还能靠别人吗？”颜渊说：“请问其详？”孔子说：“违反礼法的事不要看、不要听、不要说、不要做。”颜渊说：“我虽不才，愿照此办理。”

The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.

每一种东西的价格都会因时间和地点的不同而涨落；每一次这样的变化都会改变货币的购买力。

The secret of happiness is to expand your interests as much as possible and to be as kind as possible to the people and things that interest you.

成功不是终点，失败也不是致命的：重要的是继续前进的勇气。

科学家只强加两件事，即真理和真诚，强加于自己和其他科学家。