真相很少是纯粹的，也从来不是简单的。
When I hear the word culture, I reach for my checkbook.
The journey of science is not just about finding answers, but about asking the right questions.
If you think about something at three o'clock in the morning and then again at noon the next day, you get different answers...
Machine learning is the science of getting computers to act without being explicitly programmed.