The man who sees evil where none exists, will do more to call it into existence than he imagines, and equally true, or even more so, is the converse, that he who sees good where none seems to exist, will call it forth, bring it to the surface.
The teacher, who imagines that all children are mean and are merely waiting for a chance to exercise that meanness, will soon justify his suspicions and the children will become what he imagines them to be.
Yet such a teacher often little realizes that it has been his own wicked fears and worries that helped--to put it mildly--the evil assert itself..