“ To observe people in conflict is a necessary part of a child's education. It helps him to understand and accept his own occasional hostilities and to realize that differing opinions need not imply an absence of love. 观察冲突中的人们是孩子教育的一个必要部分。它帮助他理解和接受自己偶尔的敌意,并认识到不同的意见不一定意味着缺乏爱。 Milton R. Sapirstein 米尔顿·R·萨皮尔斯坦
“ To establish that a rule is likely to be true, one must try to prove it false. 要确定一条规则可能是正确的,就必须设法证明它是错误的。 Stuart Sutherland 斯图尔特·苏瑟兰德
“ One may say the eternal mystery of the world is its comprehensibility. 有人可能会说,世界永恒的奥秘在于它的可理解性。 Albert Einstein 爱因斯坦