在数学中,从困惑到清晰的旅程是最有价值的体验。
The past is always changing, because we are always changing our relationship to it.
"A writer's duty is to tell the truth, even when it is uncomfortable or inconvenient."
在代数中,两个量的相等性通过方程来表达。
Happiness is at your feet, if only you are willing to lower your head and look for it.