数学中真正的挑战不是解决问题，而是提出正确的问题。
The true challenge in mathematics is not solving problems, but asking the right questions.
好的构图就像好的对话——每个元素都有其位置和目的。
The success of everything depends on intuition, the capacity of seeing things in a way which afterwards proves to be true, although it cannot be established at the moment.
Understanding the computational complexity of learning problems is essential for developing efficient algorithms.
All language is but a poor translation.