思考的过程不是一系列分离的步骤，而是结构转换的连续流动。
Sustainability is not an option; it's a responsibility we owe to future generations.
"The present is always invisible because it's environmental and we're fish."
An expert is a person who has made all the mistakes that can be made in a very narrow field.
Be nice to your children because they are going to choose your nursing home.