我们必须尊重土地，因为它是我们一切工作的基础。

我不相信“舒适区”这个概念。

The joy of mathematics is in the struggle to understand.

The rise of China and the resurgence of Russia have challenged the idea that liberal democracy is the only viable form of government.

"We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction."

家庭的纽带比任何挑战都更强大。