I flipped through my notebook to the lecture on negative and positive liberty. In a blank corner I scratched the line, None but ourselves can free our minds. Then I picked up my phone and dialed.

我将笔记本翻到关于消极自由和积极自由的那堂课。在一个空白处，我画线写下：只有我们自己才能解放我们的思想。然后我拿起电话拨通号码。