你和目标之间唯一的障碍就是你不断告诉自己的那个故事。
We kid ourselves if we think that the ratio of procedure to data in an active data-base system can be made arbitrarily small or even kept small.
科学的进步不是一条直线,而是一系列曲折,有时在新的进展之前似乎会倒退。