President Obama has said he would be willing to speak with Cuba's leaders, but would maintain the embargo as leverage to push for democratic change and an improvement in human rights.

VOA: standard.2009.04.07

I think, for example, in my own relationships,talks about my marriage, where I have to be vulnerable, I have to take a risk, where in fact I have to be willing to change my mind about my reading of the situation, based on my own fears and insecurities and anxieties.

举我自己的感情，我的婚姻作为例子吧，在婚姻中我会很脆弱，我必须冒险，而且，我必须愿意去改变自己,对当前状况的解读，不安全感和焦虑的影响而变得盲目。

普林斯顿公开课 - 人性课程节选