Raymond’s College Life at Tsinghua University, Beijing China 清华大学的校园生活

I wish that my friends and family won’t mind if I forget their birthdays. Being a boy who always forgets or neglects his own birthday, it is a bit hard to memorize or value the birthdays of many other people. I know that tools like Facebook conveniently and constantly remind us whose birthday today [...]

Grant me the serenity to accept the things I cannot change, courage to change the things I can, and wisdom to know the differece.
– Reinhold Niebuhr

When Einstein was working at Princeton, two students asked him after the final exam, “Why are the questions exactly the same as those of last year?”
Einstein replied, “Yes, but the answer has changed.”