在真实与不真实之间,在真与假之间,没有严格的区别。一件事不一定是非真即假;它可以是既真又假。
You can't change the direction of the wind, but you can adjust your sails.
学习数学的唯一方法就是做数学。
Idleness is the beginning of all vice, the crown of all virtues.