The past is always present in the work.
We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.
给定系统中的酸和碱不是绝对的,而是相互关联的。
Life never exists on its own, but accompanied by loneliness. Whether we are born, we grow up, we fall in love or we succeed and fail, until the end, loneliness exists in a corner of life like a shadow.