The joy of mathematics comes from the moments of clarity when complex things become simple.
The only way to get rid of a temptation is to yield to it.
生命的意义在于发现你的天赋。生命的目的是把它奉献出去。
最大的恶和最严重的罪行是贫穷。
The important thing is not to stop questioning. Curiosity has its own reason for existing.