I always tell my students that it's okay to make mistakes, as long as you learn from them.
So given a Time Turner, I would tell my 21-year-old self that personal happiness lies in knowing that life is not a check-list of acquisition or achievement. Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone’s total control, and the humility to know that will enable you to survive its vicissitudes.
小说是伟大的民主艺术形式。在这里,你可以成为任何人,做任何事,说任何话。
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.
人民是我的同胞,万物是我的伙伴。
Every ton of ore we extract carries with it a responsibility to the future.