Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

释义：知足常乐的人会感到快乐，没有欲望没有追求的人会感到轻松。

下一个突破不会来自把事情做得更好，而是来自做更好的事情。

孩子是最苛刻的观众，但也是最值得的。

The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.