思想塑造历史的进程。

The teacher is not in school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to those influences.

Investing in lower-emission technologies is not only good for the planet but also makes sound business sense.

教育的根是苦的，但果实是甜的。

追求幸福是一种徒劳的努力；真正的满足在于接受。

I write because I have no other way to survive.