软件开发中最重要的一个方面是明确你试图构建什么。
The most important single aspect of software development is to be clear about what you are trying to build.
Try to learn something about everything and everything about something.  
Never underestimate the power of a single idea to transform the world.
挡在你和目标之间的唯一东西是你不断告诉自己为什么无法实现它的故事。