出自《论语·子罕篇第九》。我曾经用尽全力，但是孔夫子仍然卓立在我的面前，我想要去追从他，但是总觉得没有办法能够追上去。
邪恶胜利的唯一必要条件是好人无所作为。
We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.
Sustainability isn't just about planting trees; it's about planting the right trees in the right places for the right reasons.