过去从未死去，甚至从未过去。
The past is never dead. It's not even past.
"A good story is one that lingers in the mind long after the last page is turned."
"A great book is a friend that never lets you down."
Your time is limited, don’t waste it living someone else’s life.
在数学中，提出问题的艺术必须比解决问题更有价值。
在一个欺骗的时代，说出真相就是一种革命行为。