In mathematics, the art of proposing a question must be held of higher value than solving it.
在数学中，提出问题的艺术必须比解决问题更有价值。
The imagination is a muscle. If it is not exercised, it atrophies.
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
21世纪最激动人心的突破将不是因为技术，而是因为人类概念的扩展。