The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.
唯一值得称道的自由是追求我们自己的利益的自由方式，只要我们不试图剥夺别人的利益或妨碍他们获得自己的利益。
因此，教学艺术无非是时间、科目和方法的巧妙安排。
世界是一本书，不旅行的人只读了一页。
The most important thing in singing is sincerity, technique is just auxiliary.
The purpose of art is to make the soul visible.
一只系得妥帖的领结，就是人生认真的第一步。