A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else. Men’s happiness or misery is most part of their own making. He, whose mind directs not wisely, will never take the right way; and he, whose body is crazy and feeble, will never be able to advance in it.

Mathematical intuition is like a muscle - it grows stronger with exercise.

"The true measure of a scientist's worth is not in the accolades received, but in the impact of their work on the world."

道理明白了，文辞就能表达清楚；文辞表达清楚了，道理也就明白了。

有些书如此特别、罕见、属于你，以至于表达对它们的喜爱都像是一种背叛。

To solve the hard problem, we may need to expand our physical worldview.