"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

But in fact, I have to go there, and when going there, I have to reconceive of not just where I was, what I was doing, but in part who I am.

而事实上，我必须前进，并且当我在前进中，我不仅必须重新审视，我在哪里，在干什么，还要审视我是谁。

普林斯顿公开课 - 人性课程节选

He says what NATO is doing is a start, but there is still a long way to go.

VOA: standard.2010.06.16

"But,it puts us in a very awkward position because,if we cannot go there ourselves to see what they are doing, to whom they are distributing and what criteria they are using, how much they are keeping for themselves, how much is getting lost, we start losing control over it,"

VOA: standard.2009.08.07