在数学中，提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
Quality is remembered long after price is forgotten.
The spirit of entrepreneurship is the spirit of never giving up.
The secret of change is to focus all of your energy not on fighting the old, but on building the new.
真实的生活缺席了。我们不在这个世界上。