You have to dream big and believe in yourself, because no one else will do it for you.

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.

We have to continually be jumping off cliffs and developing our wings on the way down.

没有大胆的猜测，就没有伟大的发现。