数学不是沿着一条清理得很好的高速公路小心行进，而是进入一个陌生的荒野的旅程，探险者常常会迷路。

我们唯一需要害怕的就是害怕本身。

Intelligence plus character – that is the goal of real education.

Design is not just what it looks like and feels like. Design is how it works.

图书馆是一个过去、现在和未来相遇的地方。

The will of the people, moreover, practically means the will of the most numerous or the most active part of the people; the majority, or those who succeed in making themselves accepted as the majority; the people, consequently may desire to oppress a part of their number; and precautions are as much needed against this as against any other abuse of power. The limitation, therefore, of the power of government over individuals loses none of its importance when the holders of power are regularly accountable to the community, that is, to the strongest party therein