I sing not because I am blind, but because I have a voice.
We thought that we had the answers, it was the questions we had wrong.
The more we learn about the universe, the more we realize how much we have yet to discover.
做伟大工作的唯一方法是热爱你所做的事情。
人生最大的诅咒是拥有伟大的才能却没有使用的意愿。