The best buildings are those that disappear into use.

The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.

快乐有益于身体，但悲伤才能发展心灵的力量。

"The lifeblood of any business is its customers."

I think the best thing you can do is to be grateful for what you have.

爱是唯一越用越多的东西。

做伟大工作的唯一方式就是热爱你所做的事。