No man is free who is not a master of himself.
在数学中，提出问题的艺术必须比解决问题更有价值。
最好的领导者是那些多听少说的人。
The self is not a thing to be discovered, but a reality to be created.
Experience is simply the name we give our mistakes.
接人待物要平和而有节操，处理事情要明白而果断，识理要正直诚实而通达。