数学的本质在于它的自由。
"The essence of mathematics lies in its freedom."
The act of writing is an act of love.
Poverty is not just a lack of money; it’s about having so little that you can’t even afford to make the right decisions.
You can fool all the people some of the time, some of the people all the time, but you cannot fool all the people all the time.
In the end, we will remember not the words of our enemies, but the silence of our friends.
人的正确功能是生活，而不是生存。