能源创新必须与责任相平衡——进步不能以牺牲地球为代价。
真相很少是纯粹的,也从来不是简单的。
牛、猪、战争和巫术并非任意的文化偏好,而是对物质条件的适应。
学校应该是培养集体精神的地方,个人在与社会的和谐中得到发展。
When we can't talk about something, it becomes dangerous.
The best investment you can make is in yourself.
I think the best way to learn is by doing.