建造和创造之间的区别在于：建造的东西只能在完成后被爱，而创造的东西在存在之前就被爱了。
The most successful companies are those that solve real problems for real people.
有时我希望有人能找到我。
The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.
Friends can come and go, but banners hang forever.
在理论物理学中，近似的艺术往往比精确解更重要。