“ One for sorrow, two for joy, Three for a girl, four for a boy. Five for silver, six for gold, And seven for a secret that must never be told. 一个代表悲伤,两个代表欢乐,三个代表女孩,四个代表男孩。五块钱买银子,六块钱买金子,七块钱买永远不能说出去的秘密。 佚名
“ The combined results of several people working together is often much more effective than could be that of an individual scientist working alone. 几个人一起工作的结果往往比一个科学家单独工作的结果要有效得多。 John Bardeen 约翰·巴丁