【讲解】：（教学生）不到他苦思冥想怎么也弄不明白的时候，不去开导他；不到他想说而又说不出来的时候，不去启发他。告诉他（四方形）的一个角，他不能由此推出另外三个角，就不再往下教他（新知识）了。

每一天都是改变生活的新机会。

I'm not perfect, but I'm perfectly me.

Greatness is not about being the best. It's about being better than you were before.

The only limit to our realization of tomorrow will be our doubts of today.