The power of mathematics lies in its generality and abstraction.
数学的力量在于它的普遍性和抽象性。
人们并不懒惰。他们只是有无力的目标——也就是说,目标没有激励他们。
优化是在给定约束条件下做出最佳选择的艺术。
"You have to be patient and trust the process."
To read is to travel without moving; to write is to move without traveling.