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.
Intolerance of ambiguity is the mark of an authoritarian personality.
The foundation of morality is sympathy for others.
释义：如果田地没成熟就收获，还不如不种；如果养育的孩子不学好，还不如没有。
一粒种子可以改变世界。