可持续性不是一种选择;它是我们对下一代的责任。
The world is full of obvious things which nobody by any chance ever observes.
大国总是在寻找机会以牺牲对手为代价来获取权力,如果他们认为使用武力会带来利益,他们就会使用武力。
The most profound ideas in mathematics often arise from the simplest observations.
Justice is not always served in the way we expect, but it is always served in some form.