我们称他们为兄弟姐妹，因为他们是唯一你可以选择的家人。

The key to fighting poverty is to break it down into smaller, more manageable problems.

使意念沉稳，任何事理都能通达；有志发愤图强，任何难事都能成功。

朗兰兹纲领是数学思想统一性的反映。

The greatest threat to our forests isn't logging—it's indifference.

I write to find hope.