“ The first idea the child must acquire is that of the difference between good and evil. 孩子们必须掌握的第一个概念是善恶的区别。 Maria Montessori 蒙台梭利
“ No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments. 自然规律,无论多么普遍,都不是一下子就能确定的;它得到承认之前总是有许多预兆。 Dmitri Mendeleev 门捷列夫