The hardest thing is to live richly in the present without letting it be tainted by the past or future.
我们写作是为了给无声者发声。
幸福不在于强度,而在于平衡、秩序、节奏与和谐。
Don't let your past dictate who you are, but let it be part of who you become.
The greatest problem for mathematicians now is probably the Riemann Hypothesis.