Democracy is not just voting, it's a way of life based on the respect of diversity and tolerance.

无畏不是没有恐惧。不是完全不害怕。无畏是有恐惧。无畏是有怀疑。很多怀疑。无畏是尽管有这些，依然每天生活。

Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

心是个奇怪的东西，它破碎了却仍能跳动。

解析：悔悟虽好，但改正更重要。