眼睛是什么也看不见的，一定要用心去看。

Our wisdom comes from our experience， and our experience comes from our foolishness.

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government."

Truth is always to be found in simplicity, and not in the multiplicity and confusion of things.

用秤称一称，才能知道轻重；用尺量一量，才能知道长短。