"I think it's important to have a balance in life, and to not let work consume you."

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

文化生态学通过关注人类与其环境之间的互动，弥合了自然科学与社会科学之间的鸿沟。

自由民主可能构成“人类意识形态演化的终点”和“人类政府的最终形式”，因此构成了“历史的终结”。