如果你想读一本书，但它还没有被写出来，那么你必须写出来。
If there's a book that you want to read, but it hasn't been written yet, then you must write it.
We want to build technology that everybody loves using, and that affects everyone. We want to create beautiful, intuitive services and technologies that are so incredibly useful that people use them twice a day. Like they use a toothbrush. There aren’t that many things people use twice a day.
To write is to confront the ghosts of memory.
I think a simple rule of business is, if you do the things that are easier first, then you can actually make a lot of progress.