The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.

当神想惩罚我们时，他们就回应我们的祈祷。

真相很少是纯粹的，也从来不是简单的。

The lion doesn't care about the opinions of the sheep. 

Certification schemes are the grammar of responsible forestry—they give structure to our good intentions.

世界处于不断变化的状态。没有什么是保持不变的。你永远不能两次踏入同一条河流。

别做最好的，要做唯一的。