每本书都是一次前往未知世界的旅行，充满了可能性。

秘密就像影子 - 时间越久拖得越长。

解决复杂问题的关键是提出正确的因果问题。

The greatest cruelty is our casual blindness to the despair of others.

Collaboration in mathematics is essential; the exchange of ideas leads to breakthroughs that no single mind could achieve alone.

骄傲是普遍的罪恶，是最大的恶习。