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.
I don't like favors; they oppress and make me fell like a slave. I'd rather do everything for myself, and be perfectly independent.
粮食安全的未来就在波涛之下，我们有责任明智地开发它。