The study of mathematics is like air or water to the development of science.
What matters in life is not what happens to you but what you remember and how you remember it.
I don't think you should ever have to apologize for your excitement.
Every book is a journey, and every journey is a book.
永远的经典,无法翻译的英语经典。伦敦上空的鹰们万岁。
挑战是伪装的机会;用勇气和智慧拥抱它们。
技术应该服务于人性,而不是改变人性。
The unexamined life is not worth living.