理解计算的极限与理解数学的极限同样重要。

君子有三种快乐，但称王天下不在其中。父母都健在，兄弟没有灾祸，这是第一种快乐；抬头无愧于天，低头无愧于人，这是第二种快乐；得到天下的优秀人才而教育他们，这是第三种快乐。

Nothing is as important as passion. No matter what you want to do with your life, be passionate.

We are all born mad. Some remain so.