Discipline is the bridge between goals and accomplishment.

Grow old along with me! The best is yet to be, the last of life, for which the first was made.

Being enthusiastic is worth 25 IQ points.

Self-education is, I firmly believe, the only kind of education there is.

I'm not a preacher and I'm not a teacher. I'm just a singer.

I’m not a guy that’s going to let my love for my commitment down.

数学思想的真正考验是它能否激发进一步的思考。

儿童通过自立获得身体的独立；通过自由的使用其选择能力获得意志上的独立；通过没有干扰的独立工作获得思想上的独立。