比喻天地如同熔炉，造化是工匠，阴阳是炭火，万物是被锻造的铜器。

我不会接受“不”作为答案。

应对不自由世界的唯一方法是变得绝对自由，以至于你的存在本身就是一种反抗。

教学的艺术是帮助发现的艺术。

Sustainability isn’t a trend—it’s the future. Those who ignore it will be left behind.

The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.

孔子说：“君子帮助人取得成绩，不促使人陷入失败。小人相反。”