The knowledge that we have can be analogous to a circle. Inside the circle is what we know and what we call knowledge; outside the circle is what we don't know and need to explore. As our circle of knowledge expands, so does the circumference of darkness surrounding it. So the more we know, the more we feel that we don't know.
我们所拥有的知识就好比一个圆圈。圈内是我们所知道的,我们称之为知识;圈外是我们所不知道而需要探索的。随着我们知识之圆的扩大,围绕圆圈的黑暗也会跟着伸展。所以我们知道的越多,就愈发感受到自己的无知