不自律的人是没有自由的。
No man is free who is not a master of himself.
The good life is a process, not a state of being. It's a direction, not a destination.
"Die größte Herausforderung beim Schreiben ist es, die richtigen Worte zu finden, um das Unsagbare auszudrücken."
There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.
Be the hero of your own story.
Mathematics is the art of asking the right questions and then finding their answers.
信息的价值在于其减少不确定性的能力。